DGCA Exam-General Engneering Paper 2 - Oct2012

7/30/2019 DGCA Exam-General Engneering Paper 2 - Oct2012

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AME LICENCE EXAM

PAPER 2, OCT 2012

1.In the compound gear train shown, find the RPM of the gear with 50

teeth?

a) 100 RPMb) 120 RPM*c) 60 RPMd) 50 RPM2. Figure indicates

a) OR-NOT gateb) NOT-OR gate*c) Bubbled ANDd) All of the above

3. The following marshalling signal in case of a/c indicates?

a) Left turn*


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4. Damaged internal threads can be repaired by

a) Replacement bushings*b) Hell coilc) Acres sleeved) AOTA

5. The process Tinning means

a) Cleaning of solder after solderingb) A coating of tin or solder applied to the bit before an iron can

be soldered*

c) Adding solder to a surface to be solderedd) AOTA

6. Which of the following gear transmit power from one shaft to other

either parallel or non-parallel?

a) Spur gearb) Bevel gearc) Helical gear*d) Worm gear

7. In a reciprocating engine, sparkplug fires in

a) Intake strokeb) Compression stroke*c) Power stroked) Exhaust stroke

8. MTCS


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a) In a collet equipped jack, the collet should be kept within twothreads of the lift tube cylinder during raising

b) In a collet equipped jack, the collet should be kept within twothreads of the lift tube cylinder after raising

c) The collet is screwed down firmly after jacking is completed toprevent settling

d) Both A & C are correct*

9. MTCS about towing

a) The break should be serviced before every towing operationsb) If the break is unserviceable, the a/c can be towed provided that a

person should stand by to put chokes in emergency

c) If the break is unserviceable, the a/c can be towed provided thatthe break of towing vehicle is satisfactory to stop the a/c

d) A,B & C correct*

10. MTCS for the statement Output is low when all inputs are high

a) +ve OR / -ve ANDb) +ve AND / -ve ORc) +ve NOR / -ve NANDd) ve NOR / +ve NAND

11. Convert decimal 12 to excess-3 code

a) ..b) ..c) 0100 0101*d) ..


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12. An 8-bit memory register that stores memory output during any

memory operations?

a) MARb) MDRc) IRd) Program counter

13. In a gas filled emission tube, the electrons are de-ionized and it

stopped working. This is called

a) Extinctionb) Ionizationc) Strikingd) AOTA

14. MTCS

a) If the arrow head of a diode symbol is +ve w.r.t the bar, it isreverse biased

b) If the arrowhead of a diode symbol isve w.r.t the bar, it isreverse biased*

c) If the arrowhead of a diode symbol isve w.r.t the bar, it isforward biased

d) The arrowhead has no relationship with biasing 15. What is the drawback of Transistor?

a) It cannot be used in high power application because it has lowpower dissipation

b) Cannot be used in high power applications because it has verylow input impedance


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c) It is affected by temperatured) ..

16. An engine starter motor that requires very high initial current than

its normal operating current, uses

a) Slow blow fuseb) Testing fusec) Glass cartridge fused) Immediately melting wire

17. Because of high voltage in the conductors electrons are ionized to

the surrounding air giving out a blue glow. This effect is known as

a) Corona effectb) c) ..d)

18. Consider an engine working in a selected temperature. The

thermocouple emf of that engine will be?

a) Equal to Reference voltageb) .c) d) ..

19. In a new or serviced Ni-Cad battery electrolyte, sediments of

Pottassium carbonate indicates?

a) Battery is overchargedb) Battery is underchargedc) Can measure the state of charge


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d) Can measure the voltage20. Power supply circuit for a starter motor is

a)

High resistance, short periodb) Low resistance, long periodc) Low resistance, short periodd) High resistance, long period

21. MTCS Regarding megger

a) It is a device used for measuring insulation resistance rangingupto milli ohms

b) It consists of coils mounted perpendicular to each otherc) Linear scale reading can be obtained by adjusting the angular

distance between the two coils

d) AOTA22. Which one of the following helps In reducing reluctance in DC

generators?

a) Pole shoesb) Magnetic frame and pole coilsc) Armature and conductorsd) ..

23.OPAMP shunt regulators differs from series regulators in that its

controlling element is

a) Series with the line resistorb) Parallel with the line resistorc) Parallel with the load resistanced) Parallel with the input voltage


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24. MTCS regarding Inductive instruments

a) Shows large error when frequency is different from its correctedfrequency

b) It has high power consumptionc) Shows error reading when temperature changesd) ..

25. Permanent magnetic moving coil instruments (PMMC)

a) High power consumptionb) Low torque/weight ratioc) Are not highly affected by stray magnetic fieldsd) AOTA

26. Potential of an electrode in a cell can be determined by the

potential of

a) Other electrode*b) Nic) Carbond) Zinc

27. Current transformers are

a) Step up*b) Step downc) Transformation ratio is unit

28. Precipitation treatment of aluminium is

a) Heating Al to an elevated temp. and soaking it for a longer periodof time


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b) Allow the metal to harden in room temp. to obtain its fullproperties

c) ..d) ..

29. If the 10 divisions of a vernier scale is equal to 9 divisions of the

main scale, the least count of the scale will be?

a) 0.001 mmb) 0.01 mm*c) 1.0 mmd) 1.0 cm

30. O-Ring color code for hydrocarbon fluid compatibility is?

a) Red*b) Bluec) Greyd) Yellow

31. High lift device is

a) Slotb) Flap*c) Bountary layer control devicesd) AOTA

32. Which of the following has an aerofoil shape?

a) Wing, propeller blade etc.b) Stabilizer, aileron, elevator etc.c) Rudder, flap etc.d) AOTA*


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33. ATA 27 indicates

a) Air conditioningb) Navigationc) Electrical powerd) Flight controls*

34. MTCS

a) In a micrometer, barrel and anvil are stationary but thimble ismovable*

b) In a micrometer, barrel and anvil are movable but thimble isstationary

c) d)

35. Which one of the following affects the longitudinal control of the

a/c?

a) Rudderb) Elevator*c) Ailerond) NOTA

36. Internal defects in a composite can be detected by?

a) Coin tap testb) Laser holographyc) Ultrasonic methodd) AOTA*

37. Angle of ACME thread?


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a) 45 degreeb) 90 degreec) 29 degree*d) 30 degree

38. A generator consists of

a) ..b) ..c) ..d) ..

39. Basic parts of an electromagnetic inductor

a) Magnetic field, conductor*b) ..c) ..d) ..

40. Corrosion on Mg can be cleaned by

a) 10% Chromic acid and 0.1% sulphuric acid*b) HCl solutionc) Sulphuric acid solutiond) ..

41. If a capacitor is short circuited, the ohm meter connected to it will

a) Immediately show infinityb) Reading is less than normalc) Immediately go to zero and stay thered) ..


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42. The surface when extended increases both camber and wing area

is?

a) Fowler flap*b) ..c) ..d) ..

43. Muntz metal is

a) Brass with 60% copper and 40% zinc*b) Bronze with 60% copper and 40% zincc) ..d) Corrosion resistant alloy containing magnesium, iron and

phosphor

44. The color for 100LL fuel tubing is?

a) Red*b) Bluec) Greyd) Green

45. Riv nut is

a) Hollow blind rivet*b) Solid shank rivetc) CRS nutd) Used to secure fuel tanks

46. Stress corrosion may be minimized by

a) By heat treating the surface to relieve stress


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b) By giving irregular shape during manufacturec) By adding compressive strength by shot peening*d) By cold working

47. Electrolyte of Ni-Cad battery

a) Sulphuric acidb) KOH affected by state of chargec) KOH not affected by state of charge*d) ..

48. Al is corrosive to

a) Carbon/graphite*b) Aramidc) Kevlard) ..

49. Kevlar is

a) White glowing fabricb) Has tensile strength approximately 4 times than that of Al* c) ..d) ..

50. MTCS

a) a/c oxygen system should not be serviced during fuelling*b) oxygen servicing should be carried out inside the hangarc) Only oxygen marked as medical oxygen should be used on a/cd) AOTA

51. The knurling on one end of the turnbuckle indicates that end is


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a) Left-hand threaded*b) Right-hand threadedc) ..d) ..

52. Causes of corrosion

1) Corroding metal (Anode)2) Corrosive agent (Cathode)3) Presence of an electrolyte4) Contact between metalsa) 1 &2b) 1,2 & 3*c) 1,2,3&4d) ..

53. Extra flexible cable is

a) 7 x 19*b) ..c) ..d) ..

54. Class D fire is extinguished by

a) CO2b) Dry chemical powder*c) Water based and foamd) ..

55. The rubber used with hydraulic fluid?

a) Butyl *


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b) Neoprenec) Buna sd) Buna N

56. A thermocouple ammeter has

a) ..b) .c) ..d) ..

57. When a fixed voltage is applied across a reverse biased diode,

junction breakdown occur and diode starts to conduct. The diode is?

a) Zener*b) PN diodec) ..d) ..

58. Fuel additives are added to fuel to

a) Prevent microbial growth inside the tankb) To lower the freezing point of the fuelc) To prevent detonationd) Both A & B*

59. Scratches on a/c surfaces resulting from careless handling will lead

to?

a) Starting point of corrosionb) Crack during high speedsc) Filiform corrosion at high speedsd) AOTA*


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60. The drawing which shows relative position of components within

the system?

a) Schematic diagram*b) Orthographicc) ..d) ..

61. Which of the following has high capacitance, small size and low

leakage?

a) Al capacitor*b) Chip capacitorc) Tantalum capacitanced) Ceramic capacitor

62. To show dimensions of all parts, a number of views are required.

The projection used is?

a) Orthographic projection*b) 1st anglec) 3rd angled) ..

63. Power factor is

a) Effective power (KWA) / Apparent power (KVA)b) Cosine of phase anglec) Both A & B*

64. ESD is damaged if discharge occurs as little as

a) 1000 V


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b) 100 V*c) 200 Vd) None

65. Principle of ASI is

a) Difference between pitot pressue and static pressure*b) ..c) ..d) ..

66. If the transformer ratio is 1:2, then

a) Voltage is doubledb) Current become half*c) ..d) ..

67. To remove a brake from a single landing gear,

a) Typical single base jack is used*b) Tripod jack is usedc) Tetrapod jack is usedd) AOTA

68. MTCS

a) A propeller creates thrust by giving small acceleration to a largevolume of air*

b) A turbojet creates thrust by giving small acceleration to a largevolume of air

c) A turbojet is a compromise between turboprop and turbofand) None


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69. Wave frequency used for medium and long distance, point to point

communication is?

a) Medium frequencyb) High frequencyc) Ultra high frequency*d) Extra high frequency

70. In an inductive circuit

a) Current lags behind voltage by 90 degree*b) Current leads voltage by 90 degreec) Current and voltage are In phased) None

71. MTCS regarding piezo electric effect

a) If mechanical stress is added to a quartz crystal, then voltage isinduced

b) Frequency of induced voltage depends upon thickness of crystalc) Both A & B*

72. During fuelling

a) Grounding connection is first made to a/cb) Both the a/c and vehicle are bonded/connected by bonding

wires*

c) No bonding requiredd) AOTA

73. MTCS

a) Brinnel hardness number is diameter of the ball


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b) Lesser the Rockwell number, softer the material*c) Greater the Rockwell number, softer the materiald) AOTA

74. Ventral fin provides

a) Longitudinal stabilityb) Lateral stabilityc) Directional stability*d) None

75. If current flows through two parallel conducting wires in the same

direction,

a) Strength of the field increases and they repel each other b) Strength of the field decreases and they attract each other*c) ..d) ..

76. Modulus of elasticity is

a) Stress / strain within elastic limit*b) Stress / strain above elastic limitc) Strain / stress within elastic limitd) Strain / stress above elastic limit

77. A galvanometer can be converted to volt meter by

a) Connecting low resistance in parallelb) Connecting high resistance in parallelc) Connecting high resistance in series*d) Connecting low resistance in parallel


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78. Metal tubing is sized by

a) Outside diameter in 1/32b) Inside diameter in 1/16c) Outside diameter in 1/16*d) Outside diameter in 1/16

79. The position of the signal man will be

a) Slightly ahead and in line with the left wing tipb) Slightly ahead and in line with the right wing tipc) As he looks the cockpit is on his leftd) Both A & C are correct*

80. In ultrasonic testing, pulse echo method is used to detect

a) Surface cracksb) Internal defectsc) Welding flawsd) AOTA*

81. Damaged rivets can be removed by

a) Drift punch*b) Prick punchc) Both A & Bd) None

82. Before storing a/c in hangar

a) Fuel tank should be fully filled*b) Half filledc) Empty


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d) Fuel tank should have residual fuel83. Sparking test is the most common means for identifying

a)

Ferrous alloys*b) Non-ferrous alloysc) ..d) ..

84. Aluminium is more susceptible to corrosion when substantial

percentage of _______ is present

a) Magnesiumb) Copper*c) Manganesed) Chromium

85. We can get vastly superior product than iron

a) If carbon is added to iron in percentages ranging upto approx.0.5%

b) Approx. 1 percent*c) 1.05 to 1.5 percentd) ..

86. Factor to be considered while selecting a capacitor for a particular

circuit?

a) Size of the capacitorb) Voltage it can withstand*c) ..d) ..


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87. Which of the following composite has the greatest compressive

strength?

a) Fiber glassb) Aramid*c) Carbon/graphited) Boron

88. While removing a control surface for repairing

a) Ensure that no weight is added ahead of hinge line*b) Ensure that no weight is added behind the hinge linec) ..d) ..

89. Heat treatment of Al consists of

a) Solution heat treatmentb) Precipitation heat treatmentc) Annealingd) AOTA*

90. MTCS regarding cables

a) Frequent adjustments of cable tension required*b) Low mechanical efficiencyc) High strength and high weightd) AOTA

91. EICAS stands for

a) Engine indicating and crew alerting system*b) ..


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c) ..d) ..

92. RMS value in half wave rectifier is 10 amp, then what will be the

RMS value in full wave rectifier?

a) 14.14 amp*b) 20/piec) 40/pie

93. Kirchoffs current rule is only applicable to

a) Closed loopb) Junction network*c) Open circuit

94. General purpose solders are

a) Tin & leadb) Tin, lead &antimony*c) Tin, lead, antimony & silverd) None

95. During strong winds the a/c should be parked

a) In the direction of the wind* b) Opposite to windc) ..d) ..

96. Common method for identifying ferrous metals is

a) Chemical test

b) Spark test*


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c) Pencil test

d) Hardness test

97. Turnlock fasteners are identified by

a) Outside diameter

b) Factory trade name*

c) Inside diameter

d) Outside diameter

98. Generator pole shoes

a) Usually laminated to

reduce eddy currents

b) Serve the same purpose

as the iron core in an

electromagnet

c) They concentrate the

lines of forces produced

by the field coils

d) AOTA*


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Complied by

Ann Alint Antony-Batch 8

&

Vishnu Venuraj-Batch 7

DGCA Exam-General Engneering Paper 2 - Oct2012

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Transcript of DGCA Exam-General Engneering Paper 2 - Oct2012