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(54) i) Aluminium has high electrical and thermal conductivity ii) Ductility of aluminium improves with

the addition of iron & silver

a) Only i) is correct

b) Only ii) is correct

c) Both i) and ii) are correct

d) Neither i) nor ii) is correct

(55) i) Muntz metal is same as yellow brass ii) Muntz metal contains copper & zinc in the ratio of 3:2

a) Only i) is correct

b) Only ii) is correct

c) Both i) and ii) are correct

d) Neither i) nor ii) is correct

(56) Potential difference between two conductors insulated from each other is measured in

a) Ampere

b) Coulomb

c) Ohm

d) Volt

(57) Correct way to connect a test voltmeter in a circuit is

a) In series with a unit

b) In parallel with a unit

c) Between source voltage and load

d) Both b) & c) are correct

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(58) Which term means .(1 ampere

a) Micro ampere

b) Milli ampere

c) Kilo ampere

c) Wrought iron

d) Carbon chrome steel

(59) Unit used to express electrical power is

a) Ampere

b) Volt

c) Watt

d) Coulomb

(60) Transfer of electrical energy from one conductor to another without the aid of electrical connection

is

a) Induction

b) Air gap transfer

c) Not poss

d) Possible but will cause excessive arcing thus not practical

(61) Magnetic lines of force pass most readily through

a) Aluminum

b) Copper

c) Iron

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d) Titanium

(62) In a straight conductor, the resistance is not affected by

a) Length

b) Temperature

c) Shape of cross section

d) Material

(63) Pitot pressure varies with

a) Speed

b) Air density

c) Speed and Air density

d) None of these

(64) Altimeter and rate of climb indicator utilize

a) Static pressure

b) Pitot pressure

c) Either a) or b)

d) Both a) and b)

(65)Pitot static system have heating elements to

a) Remove moisture from the air

b) Prevent ice formation

c) To permit flying at high altitude

d) All are correct

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(66) Pressure heads of pitot static system should not be painted, because it

a) Impairs their thermal efficiency

b) May cause obstruction of orifices

c) None of the above

(67) Leak test of pitot static system should be carried out

a) After installation of a component / instrument

b) Whenever malfunctioning is suspected

c) At specified periods indicated in servicing schedules

d) All are correct

(68) Which instruments are connected to the aircraft pitot static system?

a) Vertical speed indicator

b) Altimeter

c) Airspeed indicator

d) All are correct

(69) The instrument that measures difference between pitot & static pressure is

a) Altimeter

b) Pressure gauge

c) Airspeed indicator

d) Vertical speed indicator

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(70) The unit where calculations are processed is called

a) Central processing unit (CPU)

b) Control unit

c) Arithmetic and logic unit (ALU)

d) Computing unit

(71) Sequence of steps for computing a program is known as

a) Flow chart

b) Sequence process

c) Algorithm

d) None of these

(72) Basic function of a computer is

a) Addition

b) Multiplication

c) Division

d) All are correct answers

(73) EDP stands for

a) Electrical data processing

b) Electronic data processing

c) Entry data processing

d) Electronic discrete programme

(74) A computer basically

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c) Perform mathematical calculations

d) All are correct

c) Induced drag

d) Shape drag

(78) Lift generated by an airfoil is maximum at an angle of attack of about

a) 0 degrees

b) 4 degrees

c) 12 degrees

d) Stalling value

(79) Lift generated by an aircraft depends upon

a) Density, forward velocity & aircraft area

b) Density, square of forward velocity and aircraft area

c) Density, square of forward velocity and wing area

d) Density, forward velocity & wing area

(80) Lift on a wing

a) Acts through centre of gravity

b) Acts vertically upwards

c) Is perpendicular to chord line

d) Acts vertically upwards through centre of pressure

(81) Which statement is correct?

a) Self-locking nuts are used on a/c to provide tight connections which will not shake loose under severe

vibration

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b) S.L.N are used where bolt or nut subject rotation

c) Both a) & b)

d) None of these

(82) Elastic stop nuts are not used

de2"> a) English language

b) Decimal number system

c) Octal number system

d) Binary

(83) Special washers are used

a) Where a bolt is installed at an angle to a surface

b) Where perfect alignment with a surface is not required

c) Both a) & b)

d) ) None of these

(84) The marking found on the head of the stud

a) Body diameter, length & shank type

b) Body diameter, length & head type

c) Only length

d) None of these

(85)Airloc fasteners consists of three parts

a) Stud, grommet and receptacle

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b) Stud & grommet

c) Stud, cross pin and receptacle

d) None

(86) 7x19 cable is made up

a) Seven strands of 7 wires

b) Nineteen strands of seven wires each

c) Seven strands of nineteen wires each

d) 19 strands of 19 wires each

(87) The diameter range of 7x19 cables are

a) 1/8 to 3/8

b) 1/16 to 3/32

c) 1/8 to 1/4

d) 1/8 to 1/16

(88) Turnbuckle assembly is a

a) Mechanical screw

b) Making minor adjustment in cable length and adjusting cable tension

c) Consisting two threaded terminals and a threaded barrel

d) All the above

a) Seven strands of 7 wires

b) Nineteen strands of seven wires each

c) Seven strands of nineteen wires each

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d) 19 strands of 19 wires each

(87) The diameter range of 7x19 cables are

a) 1/8 to 3/8

b) 1/16 to 3/32

c) 1/8 to 1/4

d) 1/8 to 1/16

(88) Turnbuckle assembly is a

a) Mechanical screw

b) Making minor adjustment in cable length and adjusting cable tension

c) Consisting two threaded terminals and a threaded barrel

d) All the above

(89) Push-pull tubes are generally made in short lengths to

a) Prevent vibration and bending under tension load

(90) Corrosion resistant steel cotter pin is used in locations where

a) Magnetic material is required

b) Resistance to corrosion is desired

c) Both

d) None

(91) Which is correct statement