SL No
Question Option_1 Option_2 Option_3 Option_4 ANS
1Engineering Drawing is a representation of object:-
In Roman language
As a graphic representation
PrintingNone of the above
B
2Set squares are used in Engineering Drawing to draw
Horizontal lines
Vertical lines Straight linesAll straight lines except horizontal lines
D
3Compass is used in Engineering Drawing to draw
Circles of 15 cm radius
Draw circles of 30 mm radius without attachment bar.
Draw circles of 30 cm radius with attachment bar.
Draw circles of 30 mm radius with attachment bar.
C
4 Eraser should be used toErase the unwanted line
Erase the unwanted line
Erase the unwanted line without erasing the surrounding wanted lines
Both B & C C
5 Dividers are used in Engineering drawing toDivide curved or straight line
To transfer dimensions from one part of the drawing to another part.
Set off given distances.
All the above D
6For fixing the paper draughting tape and chips are used because
It appears good
It hold the drawing paper and board.
It will not damage the paper or board.
Both B & C C
7In the figure ellipse the line passing through center perpendicular to major axis is called:
Shorter axis Minor axis. Longer axisNone of the above.
B
8Engineering Drawing language for who are engaged in:
Manufacturing
InspectionMaintenance work
All the above. D
9Engineering Drawing gives the details of any object:
Shape Size
All information required for manufacture or inspection of the object.
Material. C
10The instrument used to draw irregular curves of changing radius is called :-
Bow compass.
Compass. French curve Divider. C
11 Thickness of Drawing board is : 15 mm 20 mm 26 mm 25 mm D
12The pencil used for drawing should be kept sharp to stab should not be
Less than 60 mm
More than 85 mm
Less than 75 mm
More than 65 mm.
C
13An angle which is more than 180 degree but less than 360 degree is ;-
Obtuse angle Straight angle Reflex angle Adjacent angle. C
14When two angles together make 180 deg They are said to be
Complementary angles.
Supplementary angles.
Reflex angles Acute angles. B
15When two angles together make 90 deg they are said to be
Supplementary angle
Acute angle. Adjacent angle.Complementary angle.
D
16 Modern Roman letter is consisting of Thick lines Thin lines Wide linesHeavy and light line.
D
17In engineering Drawing normal lettering ratio height and width is
9:6 6:2 3:1 7:4 D
18 Good style of lettering should aim atUniformity of thickness.
Uniformity of shape, size and style.
Uniformity of spacing.
All the above. D
19At the bottom of the drawing sheet to make title block the line used is
Thin line. Medium line. Thick line. Extra thick line. D
20 Wider lines are drawn asShort dashes.
Short and long dashes.
Short dashes closely and evenly spaced.
Short double dashes.
C
21The breaks used on cylindrical metal are often refers to as
F brakes. L brakes. T breaks. S breaks D
22 The following lines are drawn as thin lines Section lines. Center lines. Outline. Both A & B D
23The ratio of the dimension of the drawing to the corresponding dimension of the object is the
Isometric drawing.
Oblique drawing.
Representation factor.
Both B & C. D
24One of the three dimensional drawing but far side will appear converging is known as :-
Isometric drawing.
Oblique drawing.
Perspective drawing
Non pictorial drawing.
C
25In Engineering drawing, if the length is drawn half the actual length and face at an angle of 45 drawing is known as :-
Isometric. Cabinet. Cavalier. Perspective. B
26 In third angle projection method
The view from the above placed underneath and vice versa.
The view from the above placed above and vice versa.
The view from the left placed on the left and vice versa.
Both B & C. D
27In first angle projection method the projection are made on
Elevation projected on VP.
Plan projected on HP.
End view projected on auxiliary plane (right to left).
All the above. D
28The representation fraction or scale of drawing is equal to
Length of object in the drawing by actual length of the object.
Width of the object in the drawing by actual width of the object.
Area of the object in the drawing by actual area of the object.
Either B 0r C A
29In Binary subtraction, subtract 11011 from 10111 :-
- 11011 - 00100 + 11011 + 00100. B
30 Complement of a complement equal to; Zero Complement One Original. D
31The 1's compliment of a binary number is the number that results when :-
Each 0 is changed to 1 and vice-versa.
Each 0 is changed to 2 and vice-versa.
Each 0 is changed to 4 and vice-versa.
Each 0 is changed to 8 and vice-versa.
A
32 Binary equivalent of 34.4 (8) is : 10100.1100 11000.0011 10011.0101 11100.100 D
33Among the following, the output device in a computer is;
Key board Printer Mouse Joy stick. B
34 Many dot matrix printers are:-Unidirectional
Tri-directional Bi-directionalQuadra-directional.
C
35 Compass is used to draw circles of: Up to 25 cm up to 10 cm up to 20 cm up to 15 cm D
36 T' Square is used for:Drawing horizontal line
Drawing vertical line
Drawing curved line
Drawing semi circular line
A
37Now a days fixing the paper on the board, the following pins is used:
Drawing pinRound head pin
Clips and tape Paper pin C
38Colour of paper usually used in Engineering Drawing is:
Black Blue Brown White D
39If two angles together make 90 deg , they are said to be:
Straight angle
Complementary angle
Reflex angle Adjacent angle B
40One of the three dimensional drawing far side will appear converging is known as:
Isometric drawing
Oblique drawing
Perspective drawing
Non-pictorial drawing
C
41The special tool drafting machine marked on drawing board does not cover the function of:
T' Square Set Square Compass Protractor C
42The drawing tool, which is used to draw or measure such angle, which cannot be withdrawn with set square is:
Protractor Bow compass Compass French curve A
43In the blue print process, when sensitized paper is washed in running water, the portion covered by black tracing line turn in to:
Blue White Red Green B
44 Triangles or set squares comes in pair of:
45 deg.-120 deg.- 180 deg. And 60 deg.- 90 deg.-180 deg.
45 deg - 60 deg. -90 deg. And 60 deg. - 90 deg. - 180 deg.
45 deg. - 90 deg. - 45 deg. And 30 deg. - 90 deg. - 60 deg.
45 deg. - 60 deg. - 180 deg. And 30 deg. - 90 deg. - 60 deg
C
45In convention of lines, thinnest line a draftsman is able to draw is:
20 mm 0.02 mm 0.20 mm 0.002 mm C
46 A good style of lettering should aim at:Uniformity of thickness
Uniformity of shape and size
Uniformity of spacing and style
All the above D
47The inclination angle in a slanting type of lettering is:
95 deg. 85 deg. 75 deg. 65 deg C
48An instrument used for making curve lines is known as:
French curve File pad Shield Square A
49 Leader lines are used for: Decoration Projection Dimension Section. C
50In engineering drawing, a thick free hand irregular lines indicate:
Break line Section line Adjacent partsParts to be sectioned
A
51When two angles together make 180 deg , they are said to be:
Supplementary angle
Complementary angle
Acute angle Obtuse angle. A
52A drawing of an entirely finished product with the components assembled together in the correct relative position is known as:
Detail drawing
Assembly drawing
Pictorial drawing
General drawing D
53To show yards, feet and inches on a scale, the scale will be suitably constructed as:
Plain scale RF scale Diagonal scale Vernier scale C
54A thick small dash and two small dashes are used in the line to express
Long break Short break Cutting plane Hidden parts C
55 Dot matrix printer is an example of:- Line printer Laser printer Drum printer Character printer D56 A keyboard is a most common:- Memory unit Input device Control device Output device. B
57A movable vertical surface for controlling the motion of an aerodyne about the normal axis IS:-
Rudder Elevator Aileron Fin. A
58The left side of an aircraft when facing the front as seen from the cockpit is :-
Star board Port side Rear sideNone of the above.
B
59
Movable aerofoil situated at the rear end of each wing and designed to impart a rolling movement to the aerodyne about longitudinal axis is :-
Rudder Elevator Aileron Fin. C
60Hinged rear positions of the main plane which move in the same direction on Port and Star board wings are:
Elevator Aileron Fin Flaps. D
61A fixed vertical surface affecting the directional stability of an aero plane is :-
Rudder Fin Flaps Elevator B
62A fixed horizontal surface situated at the rear of an aircraft affecting the longitudinal stability is :-
Main plane Fuselage Tail plane Fin. C
63One of the thrust augmentation device used in jet engine is :-
Exhaust pipe Turbine After burner Compressor. C
64 A supporting surface of a aerodyne is :- Main plane Tail plane Fuselage Fin. A
65The capacity of a material to absorb the energy in elastic range
strength stiffness resilience Resistance C
66The property being permanently extended or flattened by hammering rolling or pressing without rupture
Elasticity Swaging Malleability Tenacity C
67The property whereby a metal can be drawn out into a wire with out cracking
Elasticity Ductility Savaging Drawing. B
68The liability of a metal to fracture on receiving a blow or shock
Malleability Tenacity Fusibility Brittleness D
69The permissible difference in dimension to allow for various fits is termed as :
Clearance Allowance Resistance Tolerance. B
70 Pig Iron isweak and brittle
ductile and malleable
Hard and Brittle.
none of the above
A
71 The cast steel is produced by :Cementation process
Crucible process
Open hearth process
Electric process. B
72 Pure iron has a tensile strength of :20 Tons /Sq inch
18 Tons/ Sq Inch
55 Tons / Sq inch
50 Tons / Sq inch.
B
73Pig iron is used as the basic material for producing ;-
Cast iron
Cast iron ,wrought iron and steel by suitable process
Marking off and surface plate
Steel.. B
74 The constituents of brass are: - Copper, Zinc Copper, Tin Tin, Lead Copper, Lead. A
75Metal is a substance which posses certain physical properties such as:
They conduct heat or electricity
They generally have ringing tones
They have metallic lusture or shine
All the above. D
76Forcing plastic material through die of required shape by means of hydraulic pressure is called:
Plasticity Swaging Stamping Extrusion D
77The body of a twist drill is lesser in diameter towards the shank end by:
0.002" 0.001" 0.004" 0.003" B
78 Hide faced hammer is classified by:Size and weight
Type and weight of the head in ounce
Weight onlyThe number stamped on it
D
79Slow and progressive deformation of a material with time under a constant stress is called:
Strength Creep Resilience Stiffness B
80The property of a material to resist heat and electricity is known as
Stiffness Resistivity Conductivity Ductility. B
81The straight part of the tread, which connect the crest and root is known as:
Crest Flank Root Thread angle B
82 While soldering low voltage ceramic capacitors, the soldering time should be kept less than 5
350 deg. C 200 deg. C 225 deg. C 250 deg. C B
seconds, and temperature should not exceed:
83Hand brace is used for drilling small holes up to:
1/2" diameter 1/8" diameter 1/4" diameter 1" diameter C
84The accuracy of micrometer in metric system is:
0.02 mm 0.01 mm 0.05 mm 0.04 mm B
85Large component and number of parts can be soldered in one operation by:
Hard soldering
Sweat soldering
Dip soldering Silver soldering C
86A type of thread used for transmitting great pressure in one direction only, is called:
Worm thread Acme thread Square thread Buttress thread D
87To calibrate the torque wrenches, the number of comparison reading required at least is:
Two times Three times Five times Six times C
88In switch board connection, the red coloured cable is used for:
Earth line Neutral line Live line Lifeline C
89 The size of split pins is determined by its:Diameter and colour code
Diameter and length
Diameter and breadth
Diameter and material.
B
90The type of locking device suitable for Pressurised cabin, fuel and oil tanks is"
Nylon stiff nut
Phillips stiff nut
Air tight stiff nut Nyloc cap nut D
91 Lubricating oil is graded by: ColourAmount of hydro carbon present
Code Viscosity. D
92 Lubricant oil is mixture of:Trichloroplylene
Fluid lubricants
Hydro carbonNon-leaded petrol
C
93 Use correct size of spanner so that:The over tightening is avoided
The time delay is avoided
The possibility of cross threading is avoided
The bolt head or nut is not damaged
D
94A filler material used to join the parent metal is known as:
Flux Solvent Solder Wax C
95 Brazing is used to give strong joint for: Brass Zinc Nickel Silver A
96In aluminothermic soldering iron, the source of heat is:
Brazing lamp MOX tabletElectrical heating element
Open flame. B
97 The key seat rule is made of:Graphite carbon steel
Spring carbon steel
Low carbon steel
High carbon steel.
D
98 All the precision instruments are made of: Invar steel Silver Nickel Steel A
99The accuracy of the feeler gauge for measuring thickness is:
0.001" 0.004" 0.005" 0.003" C
100The type of capacitor suitable for use in AC circuits such as in AC motor starter is :
Paper capacitor
Electrolytic capacitor
Polorised electrolytic condenser
Non-polarized electrolytic capacitor
B
101The tenacity with which a magnetic material holds on to its magnetism is called :
Coercive force
Retentivity CoercivityMagnetic Hysterisis
C
102In DC generator staggering slots are used to minimize ripple in the
Input voltageInput and out put voltage
Output voltage Output current C
103
The total capacitance in an electrical circuit having three capacitors of 2 micro farads, 3 micro farads and 6 micro farads connected in series:
11F 11 Mf 0.1 mF 10 F C
104In iron cored transformer with 8: 1 ratio is connected to 120V mains, the voltage across secondary will be:
20 V 15 V 10 V 25 V. B
105 For high voltage the insulator used is: Trace paper Melinex Impregnated Tissue paper B
106Any machine converts mechanical energy into electrical energy is known as
Motor Stator Generator Amplifier C
107Fleming's right hand rule is used to find out the direction of:
FieldMotion of the conductor
Direction of induced emf
Direction of current.
B
108In delta connected alternators the 3 phase windings are joined in:
Auto transformer
Step up transformer
Step down transformer
Voltage transformer
B
109In transformerif K is greater than one, then the transformer is called:
Greater accuracy
Robust in construction
To provide equal amount of frequency
Cooling purpose D
110The maximum value, positive or negative of an alternating quantity is known as:
Time period Frequency Amplitude Cycle C
111The direction of motion of a DC motor is given by:
Fleming's right hand rule
Fleming's left hand rule
Faraday's law Lenz's law B
112The total capacitance in electrical circuit having three capacitors of 2 mF, 3 mFand 6 mF connected in series is:
11 F 11 Mf 1 F 1 mF D
113 By decreasing the flux, the speed a shunt motor will be:
Remain constant
Increase Decrease Diminish because torque
B
is insufficient.
114Kirchoff's law are more comprehensive than ohms law are used for solving:
Electrical conductance
Electrical temperature co efficient
Electrical resistance network
Electrical net work
D
115Resistance offered by 100 cm length of wire having an area of cross section of 100 cm sq is called:
Specific temp. co- efficient
Specific conductance
Specific co-efficient
Specific resistance
D
116The isometric drawing represent three dimensions of the object:-
Lenght, breadth and height of the object.
Breadth, height and are of the object.
Height, lenght and circumference of the object.
Length, breadth, height and depth of the object.
A
117Computer which doesn't compute directly with the number is called :
Mini computer
Micro computer
Digital computer
Analog computer A
118 The number 17 octal is equivalent to binary : 111 1110 10000 1111 D119 Which of the following is not octal number: 19 7 15 101 A
120 Junction diode is a :Bipolar device
Constant voltage device
Unipolar deviceConstant current device
A
121 A register stores :One word of data
A byte One instruction 4 bits data A
122 Not gate is known as : Converter Inverter Rectifier Amplifier B
123 Computer hardware usually refers to :
Hard metallic component of a computer
Various associated program
CPU
Central processor input/output devices and backing storage
A
124 Which of the statement is correct :NAND gate = Bubbled AND gate
NOR gate =Bubbled OR gate
Bubbled OR gate = NAND gate
AND gate = OR and NOR gate
C
125In high level language, the source program is translated into object program with the help of :
Computer Converter Compiler Translator C
126When an input electrical signal A=10100 is applied to a NOT gate its output signal is a:
01011 10101 10100 00101 A
127 Truth table of a logic functions :Summaries its output value
Tabulates all its input conditions
Displays all its input/output possibilities
Is not based on the logic algebra
C
128 A static memory is one that
Is capable of storing binary information indefinitely
Requires periodic restoration of information
Is volatileHas destructive read out
A
129Semi conductor memory in computer is based on
Magnetic circuit operation
Transformer operation
Transistor operation
Non magnetic circuit operation
C
130 The only function of a NOT gate is to: Stop a signalRe-complement a signal
Invert an input signal
Act as a universal gate
C
131The first generation computer was introduced with:
Solid state transistors
Vacuum tubes Chips IC's B
132 Pitot pressure is connected to: Altimeter ROCI ASI Cabin altimeter. C
133Any error in indication of accelerometer along the horizontal axis is cancelled by:
A strong coiled spring
Two compensating sector gears
The restraining springs
The stop spring fitted both sides.
B
134The principle of accelerometer is that two masses electrically suspended in parallel about:
Vertical axisArthwardship axis
Fore and aft axis
' Z' Axis. C
135The type of damping used in accelerometer type 480/01 is:
Eddy current damping
Low viscosity oil type damping
Air dampingCalculated spring type of damping
A
136Moving coil instrument can be used to measure:
AC only DC and ACDC or rectified AC
AC and pulsating DC
C
137The oscillation of the pointer about its final deflected position in a indicating instrument is minimized by:
Controlling force
Damping force Restoring force Balancing force B
138Moving coil instrument works on the principle of:
Fleming's left hand rule
Fleming's right hand rule
Kirchoff's lawGenerator principle
A
139In bourden tube pressure gauge, the indicating mechanism is coupled to the:
Open end of the tube
Free end of the tube
Either a) or b)None of the above
B
140In bourden tube for measuring very high ranges, the tube is made of:
Phosphor bronze
Mild steelBeralium bronze
Beralium copper. B
141 In moving coil instrument, the temperature variation is compensated by:
The air gap between pole
A weak small permanent
The variation of current in the
Two hair springs coiled in
D
pieces and former
magnet moving coilopposite direction
142 In torque measuring system, indicator work on:Selsyn system
Desyn systemData Selsyn system
Two wire Selsyn system.
B
143 The ammeter used to measure AC only is:Electromagnetic type
Permanent magnet type
Induction type Moving iron type. C
144In tachometer indicator, the pointer movement is controlled by:
The drag cupThe permanent magnet
A hair springThe interaction of the magnetic fields.
C
145Oscillation of the pointer at lower range of Tacho indicator may be due to:
Defective indicator
Synchronizing point is too low
Two indicators are connected in parallel
Indicator not being in synchronism with generator.
D
146 Tachometer indicator comprises a:Three phase induction motor
Three phase, self starting synchronous motor
Three phase synchronous motor
Single phase, self starting synchronous motor
B
147In ratio meter type thermometer, the two coils in moving coil unit is so connected that the torque produced by them:
Oppose each other
Assist each other
Are in same direction
Do not influence each other
A
148Variable capacitance of the tank circuit measures the quantity of fuel in the fuel contents gauge indicator in a form of:
Alternating current
Direct current AC or DCFluctuating direct current.
B
149The float arm type fuel content gauges work on the principle of:
Selsyn transmission system
Desyn transmitting system
Magnesyn transmission system
Variable capacitance system
B
150In float arm type fuel content gauge, the pointer returns to off scale position by:
Hair springA strong permanent magnet
CoilWeak permanent magnet.
D
151The vapour pressure type thermometer is used for measuring:
The temperature of engine oil
Coolant temperature in liquid cooled engine
Temperature of fuel in the tank
Humidity of air. B
152The unwanted screen current in a pentode valve is prevented by:
CapacitorSuppressor grid
Control grid Choke. B
153The common base PNP junction transistor has reverse biased arrangement between:
Emitter and base
Emitter and collector
Collector and base
Base and emitter C
154When the emitter/ base junction of a transistor is reverse biased, collector current:
Is reversed Increases Decreases Stops. D
155If acid is splashed in eyes, it should be washed with :
5% solution of soda bi carbonate
5% solution of soda bi carbonate and plenty of water
2% solution of nitrogen
5% solution of alkali and plenty of water.
A
156 Pitching movement of a/c is controlled by: Aileron Rudder Elevator Fin C157 The constituents of Bronze are Copper, Zinc Copper, Tin Tin, Lead Copper, lead. B
158 The properties of Al areLight, ductile, soft and malleable
soft, poor corrosion resistance and brittle
soft, plastic, malleable and acid resistant
soft, ductile and malleable.
A
159 A great advantage of the electric furnace is :Very easy to operate
absence of gas fume and impurities
no maintenance is required
very economical. B
160 The blister steel is manufactured by ;Electric process
open hearth process
Bessemer process
Cementation process.
D
161Plastic is an organic material, which shows the property of
Elasticity Ductility Malleability Plasticity D
162 Pig Iron contains an average about:
94% Iron and 4 % carbon + remainder impurities
98% Iron and 2% carbon
95 % Iron and 2 % carbon
97% Iron and 2 % carbon + 1 % impurities.
A
163 The properties of lead are:
Soft, brittle and poor corrosion resistant
Soft, ductile and malleable
Soft, plastic, malleable and acid resistant
Malleable and corrosion resistant.
C
164 One of the purest forms of iron produced is : Wrought Iron Cast Iron Pig iron Both (a) and (c.) A
165 The properties of nickel areHard, brittle ad corrosion resistant
Hard, ductile, corrosion resistant, withstand high tempt.
Soft, poor corrosion resistant and brittle
soft, ductile, malleable, corrosion resistant.
B
166 The carbon contents in the high carbon steel is 0 to 0.25 % 0.25 % to 0.75 0.75% to 1.5 % 0.75% to 1.25 %. C
%
167 Cast iron is manufactured byCementation process
crucible process
Cupola furnace.Open-hearth process.
C
168 Chisel are classified by;
Shape overall length and width of the cutting edge
Shape and overall length
Material and size
Type and cutting edge.
A
169 Hand vice are classified by weight ; In ounces In gramsAnd length of the jaw
Of the body. C
170Chisel used for cutting the narrow flat bottom grooves is:
Flat chiselCross cut chisel
Diamond point chisel
Half round chisel.
B
171 The file used on soft material is ; Single cut Double cut Dreadnought Rasp. C
172 Files are classified byLength, section cut and grade
Type of material and size
Type and overall length
Length section and type.
A
173 Die nut is used for;Cutting external thread
Cutting internal thread
Cutting starting thread
Clearing the damage thread.
D
174The drill which is used for cutting the counter sinking holes are
Peg or Arboring drill
Bottoming drill Rose bit drill Twist drill. C
175 Scribers are made of :
High carbon steel hardened and tempered
High carbon steel
High carbon and alloy steel
Alloy steel hardened and tempered.
A
176 Sharpening the scribes is doneOn a grinding stone
By smooth fileBy dead smooth file
Either by smooth file or dead smooth file.
A
177 Surface plates are classified byType material and size
Length and breadth
Type and weight
Type and Size. B
178 The accuracy of surface plates are tested by Vee blocksMaster Surface plate
Fitter's square Vernier caliper. B
179If the zero of the micrometer thimble crosses the datum line
It is to be subtracted from the measurement
It is to be added to the measurement
It is to be neglected
It is to be adjusted with the help of concealed nut.
B
180Play in the spindle threads of micrometer is taken up by
Using a 'c' spanner
Adjusting anvil in the frame
Adjusting the thimble on the spindle
Adjusting a nut at the thimble end of the barrel
D
181The lubricant used for drilling mild steel and wrought iron is
Kerosene Soapy waterCutting oil or soapy water solution
None of the above.
B
182Lubricant used for drilling magnesium and its alloys
None Soapy water Kerosene Cutting oil B
183Lubricant used for drilling High carbon and alloy steels
Turps or Kerosene
Cutting oil or soapy water
None Water A
184 Reamers are classified by ;Type and size
Type material and size
Type size and length
Type and angle of cutting edge
A
185 The taps are used for cuttingInternal screw threads
External screw threads
Starting threads Finishing threads A
186The tool used to rundown an existing thread that has become burred or damaged, is :
Die plate Second tap circular Die Die nut D
187 Screw drivers are classified byType material and size
Type and length of blades
Width of the tipLength of the blade
D
188 Spanner are classified byType and length
Type material and size
Type material and size of nut or bolt on which it fits
Type and size C
189The pliers used for lead bending of wires and lead forming are :
Flat more pliers
Pliers round nose
Half round nose pliers
Pliers combination
B
190The property of resisting breakage when under the application of a pulling force
Tenacity Fatigue Hardness Spinning A
191The position on the crord line of an aerofoil at which the resultant force act is:
Laminarised part of the air flow.
Pressurised part of the air flow.
Centre of pressure
Centre of gravity C
192At the critical angle of attack, the flow of air from top surface of aerofoil becomes turbulent, which is termed as :
Burbling Curling Knurling Rolling A
193 In flight the lift of an aerofoil can be altered by:-Angle of attack only
Speed of an a/c only
Angle of attack and speed of an a/c
Density and pressure of air.
C
194Lift is obtained at the expense of a certain amount of horizontal force known as:-
Thrust Weight DragForward movement
C
195Honey comb construction is often used in the manufacture of
Flying control surface
AC canopy Main plane Tail plane A
196 MS dos file name is primarily ment for:Plus 5 extension characters
Plus 2 extension characters
No extension characters
Plus 3 extension characters
D
197 A computer keyboard is a most common :- In put device Out put deviceElectronic device
Mechanical device
A
198All physical requirements to construct a computer is known as :-
Software HardwareElectronic components
Mechnical components
B
199
Before taking a printout of document all the spelling mistakes and the grammatical mistakes have to be carried out MS word provides a helpful feature to carryout this task is called :-
Check Spell checkAutomatic spell check
Correction C
200Booting is the process of loading the operating system into main memory from :-
Volatile memory
Non volatile memory
Main memorySecondary memory
D
201 Daisy wheel printers is a :-Non impact printer
Impact printer Ink jet printer Laser printer B
202For opening the existing file next time remember :-
File name Pass wordDocument name
none of the above
B
203 Laser printers is a :-Impact printer
Non impact printers
Drum printer Line printer B
204Stored data goes off from the computer memory when the power supply is turned off is termed as :-
Volatile memory
Non volatile memory
Secondary memory
Non of the above A
205
The commands that do not require any specific files for being excuted and are brought into the memory as soon as the computer is switched on is termed as :-
Common commands
External commands
Internal commands
Acutal commands
C
206The first name in the file name of Dos can have :-
01 to 03 characters
01 to 08 charaters
only 05 charaters
Unlimited charaters
B
207 The main directory is called :- Files Programmes Sub directory Root directory D
208The memories that retain the stored data even when the power to the device is shut off is termed as :-
Volatile memory
Non volatile memory
Secondary memory
Non of the above B
209To close the presentation file, click on the close option from the :-
File menu End show Mouse bottom View menu A
210 To create a new file, the command used is :-
Copy CON <existing file name><new file name>
Copy CON <file name>
Copy <cource drive:file name>
Copy <destination drive:file name>
A
211Very large scale intergation circuits are introduced in :-
Second generation of Computers
First generation of computers
Third generation of computers
Fourth generation of computers
D
212When you open a new document in work, the top and bottom margins are preset at :-
1 inch 1.25 inch 2 inch 2.5 inch A
213Which of the following cannot be sensed by our sence organs :-
Software HardwareSoft and Hardware
None of the above
A
214You should save your active documents every :-
10 to 15 minutes
15 to 20 minutes
5 to 10 minutes 20 to 25 minutes A
215The grammer you use while typing a command is called :-
Syntex Format PROM EPROM A
216 Capacity test on batteries are carried out:After every initial charge
Once in every three months
Whenever capacity of the battery is suspected to be low
All above D
217 If acid is split in eyes, it should be washed with:Ammonia in diluted solution
Olive oilPlenty of cold water
5% solution of soda bi-carbonate and plenty of warm water
D
218In the lead acid type of batteries, the positive plate is made of:
Spongy lead Carbon Iron oxide Lead per oxide D
219Laminated steel core used is for transformers instead of solid iron cores in order to:
Have more supply
Reduce eddy currents
Produce eddy currents
Reduce the weight
B
220 The core of the transformer is laminated to:Increase eddy current
Reduce eddy current
Increase output voltage
Decrease output voltage
B
221 Transformer is used in a circuit for:Raising DC voltage
Lowering DC and AC voltage
Raising or lowering DC voltage
Raising or lowering AC voltage
D
222Variation of voltage in a circuit is obtained by fitting a:
Transformer Suppressor Regulator Rheostat A
223 The wattage of omni light is 60w 45w 100w 25w B
224In relation to amplitude modulation, the disadvantage of frequency and phase modulation is
very heigh range
very low range low range heigh range C
225In an alkaline charging room, boric acid solution, first aid outfit, saw dust and boric acid crystals are:
First aidNeutralising agents
Neutral agent First aid agents B
226When alkali acid has been split on skin or clothing apply:
Boric acidBoric acid followed by cool water
Boric acid followed by warm water
Boric acid followied by sopy water
C
227 The common form of threads used are ;V and sqare thread.
BAvthread.Sqare and round thread.
V and round thread.
A
228The type of sectional view used when a view is needed showing both the exterior and interior construction of a symmetrical object is;
Full section. Half section. Partial section.Revolved section.
B
229When the cutting plane cuts an object laterally or cross wise it is called
Longitudinal section.
Lateral section.
Half section. Cross section. D
230In engineering drawing the minium length of pencil stub to be kept as;
50mm 30mm 45mm 75mm D
231set sqare are used for drawing the different lines of ;
Curved lines Oblique linesVertical&inclined lines
None above C
232The hidden lines are to be drawn, the grade of pencil used is :-
H B HB 2 H D
233In Modern roman letter type elementary strokes are:-
Vertical Horizontal Accented Longitudinal C
234A line having one long and two short dashes alternately and evenly spaced is:-
Short break line
Ditto line Long break lineCutting plane line
D
235 Dimension line should be placed:-Horizontal to dimension line.
Perpendicular to dimension line
Close to the object.
Out side to feature wherever possible.
D
236Free hand and wavy line used for detail and assembly drawing is represented by:-
Short break line
Ditto line Hidden line Focus line A
237
In engineering drawing the long dash and dot alternately placed to represent an alternate position or indication of the limiting position of moving parts is known as:-
Indicating line.
Long break line.
Phantam line. Locus line. C
238In engineering drawing thin long chain represents:-
False and developed view.
Boundary lines.
Hidden detail. Centre line. D
239 Short and zig zag line is used to show:-Limited portion of a larger object.
Limited portion of a smaller object.
Boundary line of any object.
Broken line of any object.
A
240The dimension should not be scaled from blue print because:-
Dimensions are always not be scale.
Dimensions are inconsistant.
The Paper is subjected to slight shrinking due to washing and drying up.
Dimensions may not beadequate.
C
241The title block is located in the drawing sheet at :-
Top left hand corner.
Bottom any corner.
Bottom right hand corner.
Top right hand corner.
C
242White lines can be added to a blue print even after printing process i s over by :
Ferric salt solution.
Potassium terrocynide.
Ferro- prussiate.
Strong washing soda solution
D
243The category of drawing, where sides will look smaller which are away from the viewer than that which is near is:-
Oblique drawing.
Isometric drawing.
Pictorial drawing.
Perspective drawing.
D
244The drawing which gives the drawing of a single part which cannot be f urther sub divided is called:-
Simple drawing.
Assembly drawing.
Detail drawing. Spot drawing. C
245 Type of drawing shows a number of components in an assembled condition to from
Detailed drawing.
Assembly drawing.
General arrangement
Auxiliary drawing.
C
a self contained unit is: drawing.
246In engineering drawing, the projection of the top side of the object o n the horizontal plane is called:
Front elevation.
Plane. Single plane. Side elevation. B
247The chief characteristic of third angle projection is that each view i s so placed that it represents the side of the object:
Remote from it in the adjacent view.
Near to it in the adjacent view.
Opposite to it in the adjacent view.
At an angle to it in the adjacent view.
B
248
The projection consists of plan and side view, but arranged in such a way that each view is drawn to represent that nearside of adjacent vie w is:
First angle projection.
Third angle projection.
Orthographic projection.
General section view.
B
249In orhtographic drawing, the object is imagined to be placed in front of a vertical plane known as:
Front elevation.
Horizontal plane.
Ground plane. Reference. A
250Orthographic projection are classified in number of categories accordi ng to the object placed in the four quadrants are :
Two Categories.
Four Categories.
Three Categories.
Five categories. B
251To read workshop drawing of a mechine parts means to make cut the sequ ence of operation in process of;
Manufacturing of parts.
Checking of parts.
Dismantling of parts.
Assembling of parts.
A
252In third angle orthographic plan view taken from ;
Left on the front elevation.
Right on the front elevation.
Top of the front elevation.
Bottom of the front elevation.
C
253In four stroke cycle engine the cycle of operation comprises of :-
2 revolution of the crank shaft
1 revolution of the crank shaft
One upward and one down ward movement of the piston
One upward and two down ward movement of the piston
A
254In turbojet engine the initial ignition is rovided by :-
Sparking plug
Compresion ignition
Hot ignition Igniter pump D
255 The compressor's main parts are :-Compressor, rotor and diffuser
Compressor, diffuser and zet nozzle
Turbine, exhaust pipe and compressor
Compressor, rotor and zet nozzle
A
256The electric field of the primary coil is mode to collapse to generate high voltage in secondary coil by the help of :-
ChokeContact breaker
RectifierSealed discharge gap
B
257The principle of electric starter is to convert the :-
Mechanical energy into electrical energy
Electrical energy into mechanical energy
Magnetic energy into electrical energy
Magnetic energy into mechanical energy
B
258The purpose of a vent line on the top of a fuel tank is to :-
Over flow the excess fuel
Vent fuel vapour to atmosphere
REduce the fire risk
Vent fuel vapour and maintain differential atmospheric pressure
D
259 Altimeter works on the principle of :-Moving coil milivolt meter
Thermocouple AneroidDynamic pressure
C
260At high altitude pilot is provided with oxygen to avoid :-
Loss of judgement and giddiness
Blood pooling and frost bite
Loss of judgement and forst bite
Loss of vision and blood pooling
C
261 Jet pipe temperature gauge is a :-Moving coil milivolt meter
Moving coil volt meter
Ohm meter Power meter A
262 The air speed indicator works on :-Static pressure
Dynamic pressure
Difference between pitot and static pressure
Bowden tube principle
C
263The induced EMF in exhauset gas temperature gauge depends upon :-
Material of thermocouple
Difference between hot junction and cold junction temperature
Velocity of gas All above B
264Aircraft fuel tanks are not normally left empty or partially empty ove r night This is to :-
Ensure long life of the tank
Avoid gum formation
Ensure setting of sediments
Prevent water contamination
D
265Aircraft must not be left overnight with partially empty tanks because rapid condensation is liable to take place in :-
Reservoir Refuellers Fuel tanks Fuel rankers C
266For aeroengine ground run a suitable fire extingusher to be positioned is :-
CTC CO2 Methyl Bromide Foam type B
267The aircraft should be towed on soft ground by :-
Towing arm Towing frame Towing bridle Steering arm C
268The towing apparatus used in conjuction with a towing vehicle for pull ig light aircraft forward is :-
Towing frame
Towing bridleTowing bridle aof wire cable
Lightly manufactured towing arm
A
269What is the operatus to be used for aircraft with tail wheel for towin g forward on soft or uneven ground :-
Towing bridle and steering arm
Towing arm or bar
Towing bridle of wire cable
Towing frame C
270While marshalling arms repeatedly moved upward, back ward, back on-ing on ward will indicate :-
Stright aheadStright backward
Slow down engine
Chocks away A
271A ladder mounted on wheels with a working platform adjustable for high t is :-
Swing back ladder
Special elevating ladder
Shelt ladderSwing ack flat ladder
B
272Damage to the hyd system of pillar hyd jack is prevented by providing :-
Small over flow holes at the upper end of pressure cylinder
Small over flow holes at the lower end of pressure cylinder
Cut out valve Vent valve A
273For dealing with small gasolene, oil or kerosene fire the fire extingu sher used is :-
CO2 Soda acid CTCPyrene fire extingusher
D
274For servicing large aircraft the servicing ladder used is :-
Shell ladderSpecial elevating ladder
Swing back ladder
Swing back flat ladder
B
275In aircraft marshalling signals, if right or left arm down, other arm moved accross body and entended will indicate :-
Turn which backing tail to port/stbd
All clear marshalling finished
Proceed under guidance to next marshaller
Slow down port engine/stbd engine
C
276Marshalling signals of arms down palm facing out wards swing arms from extended postion out wards wil indicate :-
Chocks away Insert chocksSlow down engine
Stop engine A
277On of the main advantages of CO2 as an enxtinguishing agent is :-
Its rapidity of discharge
It prevent burning and makes to starve fire
Being inert gas it effectively blankets a fire
It cuts of the oxygen
C
278
On receipt of AOG demand the senior logistic officer is to ensure for identifications tally with standard publication and signals to be send to :-
BRDsAppropriate Equipment depot
Civil agencyManufacturer agency
B
279Prior to starting of aero engines the suitable type of fire enxtinguis her to be positioned is :-
CTC CO2 type Methyl bromide Foam B
280
Signalling by left arm extended forward horizontally cleanched right h and making horizontal slicing movement below the left palm, downward i s for :-
Winch down Winch UP Hover Release load D
281The fire extinguisher which is designed primarily to extinguish aircra ft engine starting up fire is :-
Methyl bromide
CO2 CTC Foam B
282 CRT stands for:Code rate timer
Cathode ray tube
Clutter reduction technique
Call relay timer B
283 PRP stands for:Peak repetition period
Pulse repetition period
Pulse receiving power
Peak receiving power
B
284 The light rays flows in sinusoidal path in:step index fibre
Mono index fibre
Graded index fibre
Single index fibre C
285 Black box is a:Ground equipment
Trans-receiverAir-borne device
Test equipment C
286 Digital flight data recorder is located in cockpit ATC CUR Black-box D
287The number of satellites to cover the whole earth by INTELSAT is:
two three four five B
288 Laser stand for:
Light amplification by stimulated emission of radiation
Light amplification by simulated emission of radiation
Light amplification by stimulated emmission of radiowaves
Light amplification by simulated emission of electric radiation
A
289 The otto cycle consists of
Two constant volume line and two adiabatic
Two constant volume line and a adiabatic line
One constant volume line and Two adiabatic
Two constant volume line only
A
290 Radius gauges are used to check the: Out side Inside Inside radius of Inside or outside D
circumrence of a component.
circumference of a component.
a component.radius of a component.
291
A metric micrometer having a plus error of 0.01 mm, when set to 8 5mm on barrel scale and 31 divisions on thimble scale, the actual measurem ent will be :
8.8 mm 8.81 mm 8.79 mm 11.59mm A
292The lenght of the vernier scale of a metric vernier caliper 24/25 syst em is:
0.5 mm 1 mm 12 mm 49 mm C
293DTI (metric system) is designed to read a range of:
1 mm left or right
0.5 mm clockwise
0.5 mm counterclockwise
0.5 mm clockwise and 0.5 mm anticlockwise
D
294In bevel protractory one vernier scale division is equal to:
5 minutes. 15 minutes. 55 minutes. 115 minutes. A
295In screw pitch gauge (or profile gauge) the number of teeth per teeth per inch is marked on:
Tip of first blade
BodyTips of last blade
Each blade D
296 Limit gauges are used to determine:High limit dimension
Low limit dimension
Internal and external dimension
Internal dimension within specified limit
D
297The angle between the cutting edge and axis of the drill is called:
Clearence angle
Web angle Flute angle Cutting angle D
298For enlarging the size of hole and bushes,the reamer used is ;
Hand expanding reamer.
Shell reamer.Hand taper reamers.
Hand parallel reamers.
B
299Prior to drilling hole,to locate drill center punching is done by a ce nter punch having angkle of;
45 degree 90 degree 60 degree 120 degree B
300 Electro magnetic crack detection is applid to;All types of metals.
Fabric screen. Lead screen. Wooden screen. C
301While using ultrasonic flowdector air gap between the probe and the su rface under tests eliminated by;
Use of rubber padding
Use of rubber boots.
Applying oil.Clamping the probe tightly.
C
302In the order of corrodibility the least corrodable metal is;
Chromium Nickle. Alluminium. Erass. A
303 Light alloys and stainless steel are;
Susceptable to intercrystaline corrosion.
Not susceptable to corrosion,ht.
Susceptable to surface.
susceptable to corrosion due to galvanic action.
A
304To file concave surface and elongating circular opening, the standard section of file used is;
Round. Half round. Three square. Square. B
305 If the point of a scriber is blunt it is to be;Sharpened on oil stone.
Sharpenedon grindingwheelbutdippedintowatertimetotimetoprotect itstemper.
Sharpened by using a file to avoid over heating.
Discard the scriber and chage with a new one.
B
306 Surface plates are made from; Cast iron. Wrought iron. Pig iron. High carbon. A
307While using scribing the bent end of scribed should point;
Upwards. Downwards.Towards your right.
Towards your left.
B
308While using scribing block lines can be scribed paralled to the edge o f the table with the help of;
Straight end of the scriber.
Bent end of the scriber.
Marker piece. Dowels. D
309 Key seat rule is made of;
Low carbon steel hardened and tempered.
High carbon steel hardened and tempered.
Medium carbon steel case hardened.
Plain carbon steel annealed and normalised.
B
310 Fitters square is made of;Medium carbon steel hardened.
High carbon steel hardened and tempered.
Vanadium (blade) and mild steel (stock).
Spring steel and cast iron.
B
311The legs of the callipers are curved outwards at the extrimities is kn ow as;
Jenny callipers.
Out side callipers.
Inside callipers.common callipers.
C
312 Spanners used in restricted spaces is;Splined tube spanner.
Peg spanner.crow foot spanner.
Terry set. C
313
A metric micrometer having minus error 0.02mm when set to 7 5mm on bar rel scale and 13 divisions on thimble scale ,the actual measurement will be;
7.61mm. 7.63mm. 7.65. 7.67mm C
314If the spindle of micrometer is worn out ,the errour shown by the micr ometer should by ;
Subtraced from the reading.
Added to the reading.
Ignored.micrometer is not to be used.
D
315In external metricmeter of 25-50mm size, if the thimble is rotated for four complete turns from 'o'the reading will be;
25.04mm. 27mm 24.96mm 2.00mm D
316The minimum measurement that can be taken with collar with the largest extension rod of an internal metric micrometer is;
265mm. 285mm. 235mm. 325mm. D
317The smallmest size of extension rod avilable in a set of 50mm to 300mm metricinternal micrometer is;
50 mm to 100 mm.
50 mm to 65 mm.
60 mm to 75 mm.
50 mm to 75mm. D
318Diminishing resistance to fracture caused by fluctuating stresses is t ermed as;
Toughness Hardness Fatigue Brittlennes C
319The capacity of a material to return to its original diensions on the removal of distorting forces :-
Elasticity Conductivity Ductility Tenacity A
320The capacity of material to observe the energy in electrical range is called
Elasticity Tenacity Resilience Resistivity C
321The property of being permanently extended or flattened by hammering r olling or pressing without rupture is known as :-
Tenacity Malleability Softness Plasicity B
322The property of resisting breakage when subjected to bending sudden bl ow or twist is termed as;
Hardness Brittleness. Toughness. fatigue. C
323The resistance offered by material for deformation at the elastic state is
Strength Toughness Ductility Stiffness D
324The slow and progressive deformation of material over a period of time under a constant stress and elevator temperature is called
Conductivity Creep Plasticity Tenacity C
325A permissible range of dimensions of finished components provided to c overnunavoidable inaccuracies in manufacture is:
Allowance. Clearance. Tolerance. Variation. C
326The class of fit suitable for various type of moving parts is:
Driving fit. Running fit. Push fit. Force fit. B
327Type of fit suitable for detachable or locating parts is:
Force. Interference. Transition. Clearance. C
328The key fits into a key-way in the shaft and will transmit high power is:
Feather key.Flat saddle key.
Woodruff key. Gib headed key. D
329Colour of small stainless steel bult which has no recognised standard marking is:
Brown lacquer
Blue Green anodic Yellow lacquor A
330 Aluminium alloy nuts are identified by:
Washed face machined on one face of a nut
Washed face machined on both face of a nut.
Letter 'L'stamped on one side
Letter 'AA' stamed on one side
B
331To identify a brass nut of 9/16 inch BSF, left hand thread the code le tter marked on the face of the nut is;
PBL BPL LPB BLP A
332 The hot fluid chalk method is used where;
A small component can be removed.
A big component can be removed.
A small component can not be removed.
A big component can not be removed.
A
333What is the mixture used in cold fluid chalk test method of crak detec tion:
Mixture of methylated of fruit and french chalk.
Lubricating oil and french chalk.
Mix of kerosene and lubricating oil with french chalk.
Mix of trichlorethylene and lubricating oil with french.
A
334The flourescent solution remaining in the flows or cracks will reveal clearly as;
Bright lines or patches of light .
Dull red in colour with broken lines.
Thin black lines or bright patches.
Thin red lines with bright patches.
A
335 Hammers are classified by its ;
Weight and number stamped on the side.
Type and weight of the head in ounces.
Type and weight of the head in grammes.
Number stamped on the side of the head.
B
336A common grade file used for ordinary engineering work where finish is not important is;
Dead smooth.
Second cut. Bastard. Rough. C
337 The length of file is measured between;Shoulder to the tip of blade.
Full length.Shoulder and tang end.
Teeth cut portion end to end.
A
338To induce toughness to a new file process used is;
Pickling. Pinning. breaking in. Draw filing. C
339The property of resisting breakage when under the application of pulling force is known as
Elasticity Tenacity Ductility Conductivity B
340A plain carbon ateel with carbon content of 0 67% is;
Low carbon steel .
Medium carbon steel
Blister steel high carbon steel D
341Eliments added to steel to get greater strength,toughness and resistan e to fatigue is;
Chromium nickel Tungsten. Molybdenum. B
342Property induced by adding 3% of chromium to alloy steel is;
Strength Toughness HardnessHardness at high temperature.
C
343The element added with steel to get the great strength,greater resista nce to fatigue is
Cobalt Tungsten. chromium. Vanadium. D
344 'Y' alloy is used for making;Air craft structural parts.
Piston and cylinder heads.
Stressed skin of aircraft.
Rivts. B
345Indicate the false statement Modulation is used to
reduce the bandwidth
separate differing transmissions
ensure that intelligence may be transmitted over long distance
allow the use of practical antennas
346The modulation index of an AM wave is changed from 0 to 1 The transmitted power is:-
Unchanged Halved DoubledIncreased by 50%
347In communication system noise is most likely to affect the signal
At the transmitter
In the information source
In the channelAt the destination
348 In a broadcast Superheterodyne receiver, the
local oscillator operates below the signal frequency
Mixer input must be tuned to the signal frequency
Local oscillator frequency is normally double the IF
RF amplifier normally works at 455 KHz above the carrier frequency
349One of the following cannot be used to remove the unwanted sideband in SSB This is the :-
Filter systemPhase shift method
Third MethodBalanced Modulator
350To secure maximum strength and hardness to duralumin which have been a nnealed must be;
Age hardened.
solution treated.
Precipitation treated
Anodised. B
351 Duralmin tubing should be solution treated;Prior to bending or flaring.
After bending or flaring.
Prior and after bending or flaring.
only on rebending or flaring.
c
352 What type of heat treatment is given to brass; Hardening.Case hardening.
Annealing. Blueing. C
353When alumium alloy is quenched from high temperature the excess copper comes out of solution This is known as;
Decoppering. Annealing. Evaporation. Precipitation D
354Advantage of case hardening by nitriding process is;
Retention of hardness at low temperature.
Retention of hardness at high temperature.
The depth of hardened case may be 0.08"
It is easy and cheap.
B
355Which of the following process does not require quenching after case h ardening;
open hearth process.
Box Nitriding. cyanids. C
356
If a body is stressed beyond it elastic limt, the strain thus produced will not retreat completely on removal of force This residual or rema ining strain is called;
Sheer stress. Tensile strain. permanent set. Tensile stress. C
357Electro-magnetic crack detection method is suitable for the components made of ;
Magnesium alloy.
nickle chromium.
ferrous metal and can be magnetised.
Non ferrous metals;
C
358Non distructive tests of crack detection are preferred because they;
Are cheaper and faster.
Can be used easily.
Do not damage the component.
Can be used at any part of the component.
D
359The flourescent solution remaining in the flows or cracks will reveal clearly as;
360When testing a component for crack detection by flourescent dye penetr ant method,the flows will;
Reveal as violet lines or patches under ultra violet rays.
Show bright lines or patches under ultra violet rays.
reveal bluish lines or patches under ultra violetrays.
Show thin black lines or patches under ultra vilot rays.
B
361While performance x ray crack detection the operations are protected f rom stray radiation by;
Metal screen Fabric screen. Lead screen. Wooden screen. C
362Lift is obtained at the expense of a certain amount of horizontal forc is known as:
Thrust Weight DragForward movement
C
363 At the critical angle of attack, the flow of air Burbling Curling Knurling Rolling D
from top surface of aerofoil becomes turbulent which is termed as
364The point on the main plane at which the boundary layer changes from laminar flow to the turbulent flow is
Stagnation point
Transition point
Critical point Separation point B
365Drag which varies inversely to the square of the indicated air speed i
Profile drag Wing drag Induced drag Interference drag C
366If the aspect ratio of wing is higher, the effect of it will:
Increase the induced drag
Decrease the induced drag
Keep the aircraft stable while landing
Keep the aircraft stable while taking off
B
367 If the aspect ratio is higher, the induced drag is: Higher Lower Constant Increased B
368Lift is obtained at the expense of a certain amount of horizontal forc is known as:
Thrust Weight DragForward movement
C
369 The principal factor affecting induced drag is:Plan form of the wing
Shape of fuselage
Design of the tail plane
Type of control surfaces
A
370The point on the main plane at which the boundary layer changes from laminar flow to turbulent flow is:
Stagnation point
Transition point
Critical point Separation point B
371The value of a resistor creating thermal noise is doubled The noise power generated is therefore :-
halved quadrupled doubled unchanged
372Indicate the noise whose source is in the category different from that of the other three
Solar noise Cosmic noiseAtmospheric noise
Galactic noise
373In a low level AM system amplifier is following the modulated stage must be
Linear devices
Harmonic devices
Class C amplifier
Non linear devices
374If the carrier of a 100% modulated AM wave is suppressed the percentage power saving will be
50 150 100 66.6
375One of the following is not a useful quantity for comparing the noise performance
Input noise voltage
Noise temperature
Equivalent noise temperature
Noise figure
376A carrier is simultaneously modulated by the two Sine waves with the modulation indices of 0 3 and 0 4; the total modulation index is
1
cannot be calculated unless the phase relation s are known
0.5 0.7
377 In the spectrum of frequency modulated wave
The carrier frequency disappears when the modulation index is large
The amplitude of any sideband depends on the modulation index
The total number of sidebands depends on the modulation index
The carrier frequency cannot disappear
378A pre-emphasis circuit provides extra noise immunity by
boosting the bass frequencies
amplifying the higher audio frequencies
pre-amplifying the shole audio band
converting the phase modulation to FM
379Indicate which one of the following is not an advantage of FM over AM
better noise immunity is provided
lower bandwidth is required
the transmitted power is more useful
less modulating power is required
380Indicate the false statement regarding the advantage of SSB over double sideband, full carrier AM
More channel space is available
Transmitter circuit must be more stable, giving better reception
The signal is more noise resistant
Much less power is required for the same signal strength
381The most commonly used filters in SSB generation are
Mechanical RC LC Low-pass
382 In a radio receiver with simple AGC
an increase in the signal strength produces more AGC
the audio stage gain is normally controlled by the AGC
the faster the AGC time constant, the more accurate the output
the highest the AGC voltage is produced between stations
383The local oscillator of a broadcast receiver is tuned to the frequency higher than the incoming frequency
To help the image frequency rejection
To permit easier tracking
Because otherwise an intermediate frequency could not be produced
To allow adequate frequency coverage without switching
384 If the intermediate frequency is very high (indicate the false statement)
Image frequency rejection is
The local oscillator need not be
The selectivity will be poor
Tracking will be improved
very goodextremely stable
385One of the following cannot be used to demodulate SSB
product detector
diode balanced modulator
bipolar transistor balanced modulator
complete phase shift generator
386Distance near The skip distance should be used for sky wave propagation
to avoid tilting
to prevent sky-wave and upper ray interference
to avoid the faraday effect
so as not to exceed the critical frequency
387Frequencies in the UHF range propagate by means of
Ground waves
Sky waves Surface waves Space waves
388The ground wave eventually disappears, as one moves away from the transmitter, because of
interference from
loss of line of sight conditions
maximum single hop distance limitation
tilting
389To provide two or more voice circuits with the same carrier, it is necessary to use
ISB CarrierSSB with pitot carrier
Lincompex
390 In EM waves polarization iscaused by reflection
is due to the transverse nature of the waves
results from longitudinal nature of the waves
is always vertical in an isotropic medium
391 The emitter of a transistor is dopedto a lesser extent than collector
depends upon specification
heavily
so that most of emitter injected electron ea go to the base of transistor.
392 Basic drawback with base bias circuit is
the base and collecter power supplies are same.
base and collecter resistors are returned to collector supply.
it cannot be used in switching circuits.
Beta dc varies with current and temperature.
393 In the collector feedback biasthe Beta dc generally varies.
the base resistor is grounded
the base resistor is returned to the collector than to power supply.
difficult to set a stable Q-point.
394 Amplification factor for triode is given by = rp/gm = gm.rp = gm/rp+gmNone of the above.
395 The transistor used in power amplifier havelarge current ratings
large voltage ratings
large power dissipating capacity
neither of these characteristics
396The input and output signals of a CE amplifier are
Always equal Out of phaseAlways negative
In phase
397 (0 85) in binary is 101010 110110 011111 111100
398A 1’s complement 4 bit paralles bibary subtractor requires ;
3 full adders and one half ader
4 full adders4 full subtractors
3 full subtractors and one half subtractors
399 A Flip Flop is aAstable Multivibrator
Bistable Multivibrator
Monostable Multivibrator
None of the above
400In a Transistor if the base resistance is shorted it will be :
Saturated Cut off DestroyedNone of the above
401The transistor of Class B push pull Amplifiers are biased at :
Cut offCenter of DC load line
SaturationBiasing is fixed by manufacturer
402 The varactor is usually F Biased R Biased UnbiasedIn the breakdown region
403For nomal operation of the transistor the collector diode has tobe
F B R B Non conductingOperating in breakdown region
404If an amitter follower has V CEQ = 5V, ICQ = mA and re = 1 K the maximum peak to peak unclipped output is
1V 2V 5V 10V
405The common grade of files used to give good finish quickly and has about 40 teeth per inch is called:-
Rough Bastard Second cut Smooth
406 Drills are classified by :-Type, material and size
Type, cut, width & blade
Length, type and material
Size , length and cut
407The material used to make precision instrument is known as :-
Stainless steel
INVAR steel Cast IronHigh Carbon steel
408 The term " Hand brace" is associated with:- Drilling Filing Screwing Tinning
409The property whereby a metal can be drawn out into a wire without cracking is known as :-
Fusibility Plasticity Ductility Tenacity
410These tools are used for gripping or cutting purpose :-
Ring Spanners
Lead Hammers
Pliers Dies
411The metal which is having the properties of soft, plastic, malleable and acid resistant is :
Zinc Lead Aluminum Copper
412It is a process of shaping of metals by pressure or by hammer in a die of required shape is called:-
Stamping Forging Stretching Swaging
413The process by which a new file is first used on soft metal is called :-
Breaking in Pickling Safe edge Pinning
414In metric system Hacksaw blade length is measured from :-
Centre to centre
Edge to edgeCentre to handle
centre to edge
415 The range of Micro-Meter is :- 35mm 45mm 25mm 15mm
416To find out the appropriate center of round bar, the clipper used is :-
Even leg clipper
utside clipper Inside clipper Odd leg clipper
417In lead acid battery( charged state ) electrolyte used is
Dilute H2SO4
Concentrated sulphuric acid
KOH Unaffected
418In Ni-Cd battery( charged state ), positive plate used is
PbO2 PbSO4 Ni2O2 Cd
419In lead acid battery( discharged state ), negative plate used is
PbO2 PbSO4 Ni(OH)2 Cd(OH)2
420In lead acid battery( charged state ) negative plate used is
PbO2 PbSO4 Ni(OH)2 Cd(OH)2
421 (0 85) in binary is 101010 110110 011111None of the above
422In any group If 1’s are completely overlapped by other grouping, the group is called ;
Overlap IrredundantRedundant and should be eliminated
None of the above
423A 1’s complement 4 bit parallel binary subtractor requires;
3 full adders and one half adder
4 full adders4 full subtractors
3 full subtractors and one half subtractors
424 A Flip Flop is aAstable Multivibrator
Bistable Multivibrator
Monostable Multivibrator
None of the above
425In a Transistor if the base resistance is shorted it will be :
Saturated Cut off DestroyedNone of the above
426 The colour of corrosion on steel is Brown Black Gray Reddish brown
427The process of shaping hot metals by means of hammer and presses in
Stamping Forging spinning drawing
428Aircraft parts like oleo legs and ball bearing are plated with
Nickel chromium Zinc Cadmium
429 The least count of matric vernier caliper is 0.001 " 0.01 mm 0.02 mm 1 mm
430The purpose of standard wire gauge is to measure :-
(a) The clearance between two surfaces.
(b) The size of wires and sheets.
(c) The inside and outside radius of the component.
(d) Slot widths and caliper settings.
431The process of using a new file first on soft metal is called :-
(a) Draw filing.
(b) Pinning. (c) Pickling. (d) Breaking in.
432Hacksaw blade may loose its correct temper if it is :-
(a) Loosely fitted.
(b) used with more pressure.
(c) Cutting at faster rate.
(d) Fitted too light.
433To safe guard the finished surface of job against damage by the teeth of the vice jaws, clamps used are of :-
(a) Copper, steel and magnesium.
(b) Copper, lead and aluminium.
(c) copper, iron and aluminium.
(d) Silver foil, lead and aluminium.
434The plier suitable for holding screw heads and nuts :-
(a) Bernard. (b) Hellerman. (c) Flat nose.(d) Slip joint plier.
435Material used for insulation between commutator segment is :-
(a) Micanite. (b) Paxolin. (c) Mica. (d) Ebonite.
436 Low carbon steel is having carbon content of :-(a) 0.75% to 1.5%.
(b) 0.25% to 0.75%.
(c) 0.25% to 1.5%.
(d) Upto 0.25%.
437The capacity of an organic material to get deform or change the shape under heat and pressure is :-
(a) Elasticity. (b) Resilience. (c) Plasticity. (d) Extrusion.
438While soldering LDRs and thermisters the temperature should not exceed above
(a) 350 deg C.
(b) 250 deg C. (c) 200 deg C. (d) 150 deg C.
439If inter-crystalline corrosion is detected on aircraft part, it should be :-
(a) Electroplated.
(b) Replaced.(c) Covered with enamel paint.
(d) Given anodic treatement.
440 Files, thin bladed of fine grade made out of Equalizing Geneva file Rasp file Swiss file A
special steel, hardened and tempered are: file
441 Pin vice is used for holding: Square jobs Small rodsBigger jobsBigger rods
Bigger rods B
442 Needle files are used for:Making hole in the needle
Filing in odd places
Pierce design work in thick metals
Pierce design work in thin metals
D
443 Wardling files are used for:Filing the electrical contacts
Pierced design work
Making key and key ways
For curved surface
C
444 Fine point pliers are used for:
Removal of parts from restricted place
Watch springHolding small rods and pins
Holding delicate parts
D
445Bolley set screw drivers are usually available in:
8 different sizes
3 different sizes
4 different sizes 5 different sizes C
446The metal having crystalline structure, becomes very hard when chilled :-
(a) Pig iron.(b) Wrought iron.
(c) Steel. (d) Cast iron.
447In a twist drill the narrow strips along the cutting edge of the blutes is known as :-
(a) Shank. (b) Lands. (c) Body. (d) Axis.
448One complete turn of the thimble of the micrometer gives a travel of :-
(a) 0.5 cm. (b) 0.1 cm. (c) 0.5 mm. (d) 0.1 mm.
449 Dividers are classified by :-(a) The materials of the legs.
(b) The distance between the legs.
(c) The perimeter of the arcs and circles.
(d) the length of the legs.
450Process of eliminating errors in computer program is known as:-
De bugging Rearranging Eliminating Oration A
451 First type of adding machine was invented by:- John NapierCharles Babbage
Blaise Pascal Dore Fiet C
452 Hybrid computer is a :Special purpose computer
Combination of analog and digital computer
General purpose computer
Digital computer A
453Name the computer which doesn't compute directly with the number:
Mini computer
Micro computer
Digital computer
Analog computer A
454 Digital computer is used for :Business and engineering calculation
To solve specific Programme
To perform variety of a operation
To solve navigational problem
A
455 Flip flops are clocked to achieve :Synchronization
OptimizationMore propagations time
'O' as output of all flip flop
A
456 The number 17 octal is equivalent to binary : 111 1110 10000 1111 D457 Which of the following is not octal number: 19 7 15 101 A
458 Junction diode is a :Bipolar device
Constant voltage device
Unipolar deviceConstant current device
A
459 A register stores:One word of data
A byte One instruction 4 bits data A
460 To feed fresh program in the memory, use: New List Write fresh Print A461 Not gate is known as: Converter Inverter Rectifier Amplifier B
462 Computer hardware usually refers to:
Hard metallic component of a computer
Various associated program
CPU
Central processor input/output devices and backing storage
A
463The JK Flip flop out put changes with each trigger when:
Both J and K are zero
J is zero k is one
K is Zero and J is one
J and K are both on
D
464 Which of the statement is correct:NAND gate = Bubbled AND gate
NOR gate =Bubbled OR gate
Bubbled OR gate = NAND gate
AND gate = OR and NOR gate
C
465In high level language, the source program is translated into object program with the help of
Computer Converter Compiler Translator C
466When an input electrical signal A=10100 is applied to a NOT gate its output signal is a
01011 10101 10100 00101 C
467 Truth table of a logic functions:Summaries its output value
Tabulates all its input conditions
Displays all its input/output possibilities
Is not based on the logic algebra
C
468 A static memory is one that
Is capable of storing binary information indefinitely
Requires periodic restoration of information
Is volatileHas destructive read out
A
469Semi conductor memory in computer is based on
Magnetic circuit operation
Transformer operation
Transistor operation
Non magnetic circuit operation
C
470 Half adder is called so because it :
Can add half the bits in a binary number
Works for half time only
Performs addition in two halves
Can not accept a carry from previous additions
D
471 The only function of a NOT gate is to: Stop a signalRe-complement a signal
Invert an input signal
Act as a universal gate
C
472In a half adder when the input signal A=1 and B=1 the:
Sum =1,carry=0
Sum =1, carry =1
Sum=0,carry=0 Sum =0,carry=1 D
473 A full adder consists of:
Two half adders cascaded together
Two half adders and one OR gate
Two half adders and one AND gate
Two NAND gates
B
474The type of memory, which provides very large storage capability with
Dynamic memory
Magnetic disc memory
Magnetic memory
Bi polar memory B
475The first generation computer was introduced with:
Solid state transistors
Vacuum tubes Chips IC's B
476Second generation of computer started with the introduction of transis
1950 1958 Early 60 Late 70 C
477 John Napier inventedFirst type adding machine
Computograph
Logarithmic table
Complex computer
C
478The input devices handles the flow of information to the computer
Prior to the execution of the program
At the time of the execution of program
After the execution of the program
When ever the floe of information are required
A
479 Control unit process the data using:Input and out put unit
ALALU with the help of memory unit
Only input unit B
480 2's complement of 1000 is: 1000 001 1110 0111 A
481Binary equivalent of decimal number 26 base 10 is:
10110 base 2
11010 base 2 10111base 2 11001 base 2 B
482The decimal equivalent of binary 101.11 base 2 is:
5.75 6.75 3.5 9.75 A
483 In computer the data are processed by : Memory unitArithmetic logic unit
Control unit Out put section C
484The instruction written in binary form is known as :
High level language
Symbolic language
Computer language
Machine language
D
485A Programme in any language above machine language is called:
A source program
An object program
Derived program
System program A
486A binary number that is equivalent to octal number 61 is
111000 base 2
101010 base 2
11000 base 2 110110 base 2 C
487 General purpose high-level language is:
Cobol, FORTRAN. Lisp and basic
D8 base Multiplan, pli and ALGOL
FORTRAN, basic, pli ,ALGOL and d base
Cobol, lisp, word processor and multi plan
C
488When 10111 base 2 is added to 101111 base 2 the result is
1000110 base 2
1001001 base 2
1100100 base 2
1010100 base 2 A
489 The binary equivalent of 12.5 base 10 is1100.01 base 2
1100.001 base 2
1010.01 base 2 1100.1 base 2 D
490The process in which heat is transmitted from one point to the other
Conduction Convection Radiation Evaporation A
491If the dry bulb and wet bulb temperature are known, the parameter can
Dew point of the air
Relative humidity
Grains of moisture
Dry bulb temperature
B
492The process in which the heat is transferred from one place to other
Conduction Convection Radiation Evaporation C
493Transfer of heat from one point to another is carried out by:
Conduction, convection and radiation
Transformation
Boiling and heating
None of the above
A
494The process in which heat is transmitted from one place to another pl
Conduction Convection Radiation Evaporation B
495 T' Square is used for:Drawing horizontal line
Drawing vertical line
Drawing curved line
Drawing semi circular line
A
496The Acronym 'CAD' in engineering drawing represents:
Computer aided drawing
Computer aided drafting
Computer aided design
Computer aided dimensioning
C
497Colour of paper usually used in Engineering Drawing is:
Black Blue Brown White D
498A new bush of correct dimension of correct hole to be fixed in the plate while re cond
Force fit Driving fit Push fit Running fit C
499 If the pivot is deeply pitted, do only: Stoning. LappingLapping and grinding
Stoning and lapping.
D
500During refueling the danger of sparking due to static electricity is avoided by:
Bonding ScreeningWeather proofing
Switching off the aircraft battery
A
501During refueling or defuelling of an aircraft, there should not be any naked flame or
10 ft. 200 ft. 100 ft. 50 ft C
502The correct replacement of an item, which has previously been removed, is termed as:
Out fit Correct fit Refit Fit C
503 The fire extinguisher for electric fire is:Normal extinguisher
Water methanol extinguisher
Foam extinguisher
Pyrene extinguisher
D
504 Workman errors are caused due to lack of: Knowledge Skill Experience All the above D
505The weather proofing material used for push switches and terminal lugs are:
PVC conduitCotton tape, rubber tape
Weather proofing caps
Washers and gaskets
C
506The disturbance set up by the radio interference originates as radiation of
High tension discharge
High frequency AC
Sparking at contacts
Electromagnet waves at radio frequencies
D
507When under carriage is in the locked UP position, the indication is :
All red lights are ON
All lights are OFF
All green lights are ON
All green lights starts flashing
B
508 The 200 Hrs servicing comes under : Minor star Intermediate Major Minor A
509The working voltage of a capacitor to which a.c. or pulsating d.c. is applied should be
the same as or greater than the applied voltage
at least 50 percent greater than the applied voltage
1.41 times the applied voltage
707 times the applied voltage
B
510If a circuit contains 10 ohms of resistance, 20 ohms of inductive reactance, and 30 ohms of capacitive reactance, it is said to be
inductive impedence reluctanceinductive reactance
D
511An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
Inductance and frequency
Capacitance and voltage
Resistance and voltage
resistance and capacitive reactance.
A
512In an alternating current circuit the effective voltage
is equal to the maximum instantaneous voltage
is greater than or less than the maximum instantaneous voltage
may be greater than or less than the maximum instantaneous voltage
is less than the maximum instantaneous voltage
D
513The amount of electricity a capacitor can store is directly proportional to
the distance between the plates and inversely proportional to the plate area
the plate area and is not affected by the distance between the plates
the plate area and inversely proportional to the distance between the plates
the distance between the plates and is not affected by the plat area
C
514
A transformer with a step-up rate of 0 to 1 has a primary voltage of 24 volts and a secondary amperage of 0.20 ampere. What is the primary amperage (. . . Losses)?
1 ampere 4.8 amperes 0.40 ampere
cannot be determined from the information given
A
515What is the capacitive reactance in ohms of the parallel a.c. circuit in Fig. 1?
5 20 10 15 A
516What is the phase relationship between the current and voltage in an inductive circuit?
the current lags the voltage by 0 degree
The current lags the voltage by 90 degree
the current leads the voltage by 90 degree
the current leads the voltage by 0 degree
B
517 Current flow is measured in terms of amperes volts watts electron flow A
518which of these following will required most electrical power during operation? (1hp = 745 watts)
A 12 volt motor requiring 8 amperes
four 30 watt lamps in a 12 volt parallel circuit
two lights requiring 3 amperes each in a 24 volt parallel system
a 1/10 hosepower, 24 volt meter which is 75 percent efficient
C
519
How much power must a 24 volt generator furnish to a system which contains the following loads? UNIT RATING onemotor(75percentefficient).. 1/5hpthree position lights .. 20 watts each oneheatingelement .. 5amp oneanticollisionlight .. 3 amp(1hp=746 W)
18.75 watts 402 watts 385 watts 450 watts D
520
If a unit in a 28 volt aircraft electrical system has a resistance of 10 ohms, how much power will it use?(1 hp = 746 watts)
280 watts 7.84 watts 78.4 watts 28 watts C
521
A 12 volt electric motor has 1.000 watts input and 1 horsepower output. Maintaining the same efficiency, how much input power will a 24 volt, 1 horsepower electric motor require?(1 hp = 746 watts)
1,000 watts 2,000 watts 500 watts
cannot be determined from the information given
A
522
How many amperes will a 28 volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms each?
1.11 amperes
1 ampere 0.9 ampere 25.23 amperes D
523The wattage rating of a carbon resistor is determined by
a gold band a silver bandthe size of the resistor
a red band C
524The potential difference between two conductors which are insulated from each other is measured in
ohms volts amperes coulombs B
525
The ratio of the true power to the apparent power in an a.c. electrical circuit is called the power factor. If the true power and the power factor of a circuit are . .. . , the apparent power can be determined by
multiplying the true power times 100 times the power factor
multiplying the power factor times 100 times the true power
dividing the true power times 100 by the power factor
dividing the power factor times 100 by the input power
C
526
A 24 volt source is required to furnish 48 watts to a parallel circuit consisting of four resistors of equal value. What is the voltage drop across each resistor?
12 volts 6 volts 3 volts 24 volts D
527When calculating power in a reactive or inductive a.c. circuit, the true power is
more than the apparent power
more than the apparent power in a reactive circuit and less than the apparent power in an inductive circuit
less than the apparent power in a reactive circuit and more than the apparent power in an inductive circuit
less than the apparent power
D
528Determine the power furnished in watts by the generator of the circuit in fig 2.
288 watts 24 watts 48 watts 12 watts C
529Concerned to Fig (3), all the resistance are of 1000 ohms. Which among the above give an equivalent resistance of 1500 ohms?
a b c d C
530If resistor R3 is disconnected at terminal D, what will the ohmeter read? (Fig. 4)
infinite resistance
0 ohm 10 ohms 20 ohms A
531With an ohmmeter connected into the circuit as shown, what will the ohmmeter read in fig 5?
20 ohmsinfinite resistance
0 ohm 10 ohms D
532In Fig 6 how many instruments (meters & ammeters) are installed correctly?
three one two four C
533
The secondary voltage of a transformer depends upon the efficiency of the transformer and the rate of the number of turns in the primary winding to the
number of turns in the secondary winding
amount of current flowing in the primary winding
material from which the core is constructed
distance separating the windings
A
534The correct way to connect a test voltmeter in a circuit is
in series with a unit
between source voltage and the load
in parallel with a unit
to place one lead on either side of the fuse.
C
535
A cabin-entry light of 10 watts and dome light of 20 watts are connected in parallel to a 30 volt source. If the voltage across the 10 watt light is measured it will be
one third of the input voltage
twice the voltage across the 20 watt light
equal to the voltage across the 20 watt light
half the voltage across the 20 watt light
C
536What device is used to measure the very high insulation resistance of electric cables?
high-resistance voltmeter
moving iron-yane meter
megger multimeter C
537Before troubleshooting an electrical circuit with a continuity light, the circuit must be
connected to the aircraft battery
connected to the aircraft generator
isolatedconnected to an external source of power
C
538A 14 ohm resistor is to be installed in a series circuit carrying 05 ampere. How much power will the resistor be required to dissipate?
at least .70 milliwatt
at least 35 milliwatts
less than .035 watt
less than .70 milliwatt
B
539 What is the maximum number of electrical wire terminals that can be installed on one stud?
four terminals per stud
three terminals per stud
two terminals per stud
as many terminals as you can stack on and
A
still havetherequirednumberofthreadsshowing through the nu
540What would be the measured voltage of the series circuit in Fig. 7 between terminals A and B?
1.5 V 3.0 V 4.5 V 6.0 V D
541 the efficiency of power in an a.c. circuit is expressed by what term?
volt-amperes true power power factor apparent power C
542 The current in a 60-watt, 120 volt electric light bulb is
0.8 amp 2 amp 1/3 amp 1/2 amp D
543 which of the following will require the most electrical power? (note: 1 hp = 746 watts)
four 30 watt lamps arranged in a 12 volt paralle circuit
a 12 volt landing gear retraction motor which requires 8 amperes when operating the landing gear
a 1/10 horsepower, 24 volt motor which is 75 percent efficient
a 24 volt anticollision light circuit consisting of two light assemblies which require 3 amperes each during operation
D
544 What unit is used to express electrical power? Coulomb Volt watt ampere C545 What is the operating resistance of a 30 watt
light bulb designed for a 28 volt system?30 ohms 1.07 ohms 26 ohms 0.93 ohm C
546 Which of the following statements is correct when made in reference to a parallel circuit?
the current is equal in all portions of the circuit
the current in amperes is the product of the EMF in volts times the total resistance of the circuit . . . Ohms
the total current is equal to the sum of the currents through the individual branches of the circuit
the current in amperes can be found by dividing the EMF in volts by the sum of the resistors in ohms
C
547 Diodes are used in electrical power circuits primarily as
current eliminators
circuit cutout switches
rectifiers power transducer relays
C
548 If three resistors of 3 ohms, 5 ohms and 22 ohms are connected in series in a 28 volt circuit, how much current will flow through the 3 ohm resistor?
9.3 amperes 1.05 amperes 1.03 amperes 0.93 amperes D
549 A good conductor of electricity is a material through or along which electrons move freely
whose protons are all on the outside
that contains few electrons
through or along which protons move freely
A
550 A circuit has an applied voltage of 30 volts and a load consisting of a 10 ohm resistor in series with a 20 ohm resistor. What is the voltage drop across the 10 ohm resistor?
15 votls 10 volts 20 volts 30 volts B
551 find the total current flowing in the wire between points C and D in Fig 8
5.0 amperes 2.4 amperes 3.0 amperes 0.6 amperes C
552 find the voltage across the 5 ohm resistor using the drawing in Fig 8
2.4 volts 12 volts 20.4 volts 24 volts D
553 Find the total resistance of the circuit in fig 9 16 ohms 10.4 ohms 2.6 ohms 21.2 ohms D554 Which of the following is correct in reference to
electrical resistance?two electrical devices will have the same . . . .resistance if they are connected in series as they will have if connected in parallel
if one of three bulbs in a parallel lighting . . . . .removed, the total resistance of the circuit will become greater
an electrical device that has a high resistance will have more power than one with a low resistance with the same applied voltage
a 5 ohm resistor at a 12 volt circuit will use less current than a 10 ohm resistor in a 24 volt circuit.
B
555 An electric cabin heater draws 25 amps at 110 volts. How much current will flow if the voltage is reduced to 85 volts?
19.3 amps 44.0 amps 4.4 amps 1.93 amps A
556 Determine the total current flow in the circuit in Fig. 10
0.2 amp 1.4 amps 0.4 amp 0.8 amp B
557 The total resistance of thecircuit in Fig 11 is 25 ohms 35 ohms 37 ohms 17 ohms D558 A 48 volt source is required to furnish 192
watts to a parallel circuit consisting of three resistors of equal value. What is the value of eachresistor?
36 ohms 4 ohms 8 ohms 12 ohms A
559 Which is correct concerning a parallel circuit? total resistance will be smaller than the smallest resistor
total resistance will decrease when one of the resistances is removed
total voltage drop is the same as the total resistance
total amperage remains the same, regardless of the resistance
A
560 The voltage drop in a conductor of known resistance is dependent on
the voltage of the circuit
the amount and thickness of wire insulation
only the resistance of the conductor and does not change with a change in either voltage or amperage
the amperage of the circuit
D
561 An electric motor malfunctions causing it overheat, which will cause an incorporated thermal switch to
prevent an open circuit
break the circuit
close the circuit break the circuit when cooled
B
562 In Fig 12, the equivalent resistance of the circuit is 20 ohms.Then the value of R1is
40 Ohms 80 Ohms 120 Ohms 240 Ohms A
563 In Fig 12, the equivalent resistance of the circuit is 20 ohms. Then the value of R2 is
40 Ohms 80 Ohms 120 Ohms 240 Ohms B
564 What would be the effect if the PCO relay in Fig 13 failed to operate when the left hand tank was selected?
The fuel pressure crossfeed valve would not open
the fuel tank crossfeed valve would open
the fuel tank crossfeed valve open light would illuminate
the fuel pressure crossfeed valve open light would not illuminate
D
565 The TCO relay in Fig 13 will operate if 24 VDC is applied to the bus and the fuel tank selector is in the
right hand tank position
crossfeed position
left hand tank position
normal position B
566 With power to the bus and the fuel selector switched to the right-hand tank (see Fig 13) how many relays in the system are operated?
three one two four A
567 When electrical power is applied to the bus (Fig 13) which relays are engaged?
PCO and TCC
PCC and TCC TCC and TCO PCO and PCC B
568 Energize the circuit with the fuel tank selector switch selected to the left hand position. Using the schematic in Fig 13, identify the switches that will change position
5,11,12,13,15,9,10
5,6,3,7,11,13 5,6,11,15,12,13 5,7,11,15 C
569 In Fig.18 the equivalent resistance of the circuit is 20 ohms. Then the value of R3 is
40 Ohms 80 Ohms 120 Ohms 240 Ohms C
570 Which symbol in Fig 19 represents a variable resistor?
C A B D A
571 If an inspection discloses that a considerable amount of acid from a lead-acid battery has been spilled in the general area of the battery compartment, which of the following procedures should be followed?
neutralize the spilled battery acid by applying sodium bicarbonate, or sodium borate dissolved in water to the affected area followed by a water wash
apply sodium bicarbonate in powder form to the affected area
apply water to the affected area until the spilled battery acids turn a cloudy white
wipe the affected area with an oil-soaked cloth.
A
572 A fully charged lead-acid battery will not . . .until extremely low temperatures are reached because
the acid is in the . . .thereby increasing the specific gravity of the solution
most of the acid is in the solution
the increased internal resistance generates sufficient heat to prevent . . . .
gases which act as an insulator are always present above the solution
B
573 What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?
the number of cells in the battery
the total plate area of the battery
the state of charge of the battery
the ampere hour capacity of the battery
C
574 when installing batterieson a constant current battery charger it is important to know that batteries of
more than one voltage rating may be connected in series and charged at
more than one voltag rating may be connected in parallel and charged at the
only one voltage rating may be connected in series and charged at the
only one voltage rating may be connected in parallel and charged at the same time
A
the same time
same time same time
575 Aircraft batteries are usually rated according to voltage and ampere-hour capacity. A 35 ampere-hour battery rating based on the 5-hour discharge rate, indicates
the battery will supply a current of 7 amperes for 5 hours
the battery will not become discharged in less than 5 hours
a battery discharge rate of 35 amperes must not be continued for more than 5 hours
the battery will supply a current of 35 amperes for 5 hours
A
576 Some aircraft use more than one battery to increase the power available for starting and for operating emergency loads. How are the batteries connected so that the output power will increase but the voltage will remain the same?
by connecting the batteries to separate loads
it is not possible
by connecting the batteries in parallel
by connecting the batteries in series
C
577 What is the rated voltage-per-call of a nickel-cadmium battery?
1.30 volts 2.00 volts 2.25 volts 1.55 volts D
578 Which of the components in fig 15 is a potentioneter?
D E C M C
579 In Fig 14, what electrical symbol is represented at E?
Fixed capacitor
fixed resistor variable resistor variable capacitor
D
580 When the landing gears are up and the throttles are retarded (see Fig 15) the warning horm will not sound if an open occurs in wire
no 4 no 2 no 9 no 10 A
581 The control valve switch should be placed in the neutral position when the landing gears are down (see Fig 15) to
permit the test circuit to operate
Provide a ground for the red light
prevent the warning horn from sounding when the throttles are closed
remove the ground from the green light
C
582 Using Fig 16 under which condition will a ground be provided for the warning horn through both gear switches when the throttles are closed?
right gear up and left gear down
anytime the gears malfunction
both gears up and the control valve out of neutral
left gear up and right gear down
D
583 When the throttles are retarded with only the right gear down (see Fig 16) the warning horn will not sound if an open occurs in wire
no. 5 no. 13 no. 8 no. 6 A
584 Schematic diagrams indicate the location of individual components in the aircraft
with aircraft station numbers of each component
on the title block by federal stock number
with respect to each other within the system
with detail drawings of each component
C
585 when referring to an electrical circuit diagram, what point is considered to be at zero voltage?
the ground reference
the current limiter
the fuse the switch A
586 Trouble-shooting an open circuit with a voltmeter as shown in this circuit (see Fig 17) will
permit current to flow and illuminate the lamp
create a low resistance path and the current flow will be greater than normal
restrict current flow and no voltage will appear on the voltmeter
permit the battery voltage to appear on the voltmeter
D
587 A battery containing six lead-acid cells connected in series (2.1 volts per cell) has a terminal voltage of 10 volts when delivering 2 amperes to a load. What is the internal resistance of the battery?
1.3 ohms 2.6 ohms 5.0 ohms 6.3 ohms A
588 The electrolyte used in the nickel-cadmium battery is a
potassium hydroxide solution
hydrochloric acid solution
sulfuric acid solution
potassium peroxide solution
A
589 Most aircraft storage batteries are rated according to
open-circuit voltage and closed- circuit voltage
voltage and ampere hour capacity
the maximum number of volt-amperes (power) the battery can furnish to a load
battery voltage and volts per call
B
590 (I) The electrolyte in a nickel-cadmium battery acts as a conductor(2) The electrolyte in a nickel-cadmium battery provides an insulator between the plates.Regarding the above statements, which of the following is true?
only no 1 is true
only no 2 is true
both no 1 and no 2 are true
neither no 1 nor no 2 is true
A
591 Which of the following is an indication of Light low toxic and heat or burn D
improperly torqued cell link connections of a nickel-cadmium battery?
spewing at the cell caps
temperature in the cells
corrosive deposits of potassium carbonate crystals
marks on the hardware
592 What is the most probable cause of an excessive amount of potassium carbonate formation on a nickel-cadmium battery?
battery overcharging
good battery ventilation
diluted electrolyte solution
high internal resistance in the battery
A
593 when should water be added to a nickel-cadmium battery?
3 to 4 hours after the charging cycle is completed
before starting the charging cycle
during the charging cycle
immediately after the charging cycle is completed
D
594 The electrolyte of a nickel-cadmium battery is the lowest when
the battery is being charged
the battery is fully charged
the battery is in a discharged condition
the battery is under load condition
C
595 What is the cell voltage of a fully charged . . . . .nickel-cadmium battery?
1.2 to 1.3 volts
1.4 to 1.5 volts 1.7 to 1.8 volts 1.8 to 1.9 volts B
596 Nickel-cadmium batteries which are . . . .for a long period of time will show . . . .. . . . . .
fluid evaporates through the . . . . .
battery is fully charged
fluid level was not periodically . . . . . .
electrolyte becomes absorbed in the plates
D
597 How can the state-of-charge of a nickel-cadmium battery be determined?
by measuring the specific gravity of the electrolyte
by a measured discharge
by the temperature of the plates
by the level of the electrolyte
B
598 Which of the following may result if water is added to a nickel-cadmium battery when it is not fully charged?
the cell temperatures will run too low for proper output
the electrolyte will be absorbed by the plates during the charging cycle
no adverse results since water may be added anytime
excessive spewing will occur during the charging cycle
D
599 Overcharging of nickel-cadmium batteries causes
excessive wetness around the cells, connectors and cases
consistently low electrolyte level
formation of an excessive amount of potassium carbonate
excessive plate sulfation
C
600 What type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible to the viewer?
medium-weight dashed line
light solid line alternate short and long heavy dishes
zigzag or wavy line
A
601 A line used to divide a drawing into equal or symmetrical parts is a
centre line section line extension line cutting plane line A
602 In the isometric view (see Fig 20) of a typical aileron balance weight, identify the view indicated by the arrow
A B D C C
603 Schematic diagrams indicate the location of individual components in the aircraft
do not give individual component location in the aircraft
do not locate components within the system
are used to locate parts and assemblies of parts for installation in aircraft
B
604 (1) A detail drawing is a description of a single part.(2) An assembly drawing is a description of an object made up of two or more parts.Regarding the above statements, which of the following is true?
only no 1 is true
only no 2 is true
neither no 1 nor no 2 is true
both no 1 and no 2 are true
D
605 Identify the bottom view of the object shown in Fig 21.
A C B D B
606 What is a fuselage station number? A measurement in inches from the datum or some other point chosen by the manufacturer
a zone number used to locate a particular point
a measurement in inches from the centerline or zero station of the aircraft
a measurement in inches which always starts at the nose of the aircraft
A
607 What type of line is normally used in a mechanical drawing to represent the exposed
sectioning line
leader line break line outline or visible line
A
surfaces of an object in sectional view?608 How many views are possible with an
orthographic projection?four six three five B
609 In an orthographic projection, which of the following is true?
there are always at least two views
it could have as many as eight views
it must be accompanied with a pictorial drawing
one-view, two-view and three-view drawings are the most common
D
610 Identify the left side view of the object shown in fig 22
A B C D C
611 where is the title block usually located on a drawing?
lower right corner
lower left corner
upper right corner
upper left corner A
612 A line used to show in edge which is not visible in a
position line phantom line hidden line break line C
613 Identify the bottom view of the object in Fig 23. B A C D A614 (1) Schematic diagrams indicate the location of
individual components in the aircraft(2) Schematic diagrams indicate the location of components with respect to each other within the system.Regarding the above statements, which of the following is true
only no 1 is true
both no. 1 and no. 2 are true
only no 2 is true neither no. 1 nor no. 2 is true
C
615 identify the phantom line in aircraft drawings __ _____ __ _____ __ ______ __ _____ __
__ __ __ __ __ __ __ __ __ __ __ __ __ __
__ _____ __ __ _____ __ __ _____ __ __
__ _____ _____ _____ _____ _____ _____
C
616 Which of the following is used extensively in all aircraft maintenance and repair manuals and are invaluable in identifying and lcoating components and understanding the operation of various systems?
drawing sketches
pictorial drawings
assembly drawings
installation diagrams
D
617 What are the proper procedural steps for sketching repairs and alterations? (see Fig 24)
C,A,d, b B,C,A,D D,B,C,A A,C,D,B A
618 What is the next step required for a . . . . .of the ilustration, Fig 25?
darken the object outlines
sketch extension and . . . . . . . . .
add notes, dimensions, . . . . . . .
sketch at least two more . . . . .of the object
B
619 When an aircraft drawing contains three separate views, the drawing is known as
separate view projection
side-view drawing
an isometric three-view
an orthographic projection
D
620 Which of the following statements is applicable when using a sketch for making a part?
the sketch may be used only if supplemented with three-view orthographic projection drawings
the sketch must show all information to manufacture the part
the sketch need not show all necessary construction details
a part is never made solely from a sketch
B
621 In orthographic projection drawings, it is often possible to portray an object clearly by the use of three views. When three-view projection is used, which of the following views are usually shown?
top, front and bottom
front, left-side and right-side
top, front and right-side
front, back and left-side
C
622 What should be the first step of the procedure in sketching an aircraft wing skin repair?
draw heavy guidelines
layout the repair
draw the details block in the views
D
623 (1)AccordingtoFAR91,repairstoanaircraftskinshouldhaveadetaileddimensionalsketchincludedinthepermanentrecords(2)Onoccasion,amechanicmayneedtomakeasimplesketchofaproposedrepairtoanaircraft,anewdesign,oramodification.Regardingtheabovestatements,which. . . .
only no 1 is true
only no 2 is true
both no 1 and no 2 are true
neither no 1 nor no 2 is true
B
624 What are the six possible of an object in Orthographic projection?
Front, top, inside, rear, right side and left side
front, outside, bottom, rear, right side and left side
front, top, bottom, rear, right side, and left side
front, top, bottom, inside, right side and left side
C
625 What is the dimension of the chamber in Fig 26?
0.0625 x 45" 0.0625 R 0.4062 R spherical
0.5000 diameter A
626 Identify the bottom view of the object shown in fig 27?
A B C D C
627 What are the means of conveying dimensions tolerances edge distances bend allowances A
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