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DGCA LICENCE EXAM

2013

LIGHT AEROPLANE

FEB-2013

BY- NIKHIL RAJ SHRIVASTAVA &POORNIMA CHOUBEY

M . P . F . C - B H O P A L & D C D E S I G N P V T . L T D . - G U R G A O N

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1. Composites bearsa. Tensile stress

b. Shear Stressc. Bearing Stress

2. Cap stripa. Top & bottom of rib.

b. Diagonal member b/n upper & lower end.

3. The marking on the heads of the Dzus Fastener is identified by-Ans. Body dia, length, head type.

4. Mostly used in control system where deflection throudh structure is required-Ans. Cable system.

5. Threaded rivets(rivnuts) are used to joint a. Two or more sheet metals where shear stress is desired.

b. Attach parts or components with screw to sheet metals.c. Two or more piece of sheet metal where bear stress is desired.

6. Non heat treatable alloy Ans. 5056

7. 2014-T rivet a. Primary Structure

b. Secondary

c. Generally not used in aircraft structure.

8. D in screw indicates A. Head drilled for safetying B. 2017 Al. Alloy

9. An A/C integral fuel tank is a. A part of A/C structure

b. Removable part

10. Composite material a. Low tensile strength

b. Low thermal expansion/ Cofficient

11. Fungicidal dopes are used in aircraft furnishing as the Ans. First coat to prevent to rotting & are extremely applied thin to saturate the fabric.

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12. Sags in A/C finishes

a. Too much coat applies b. Low atmp. Humidity

13. Rivet Joint subjected to a. Compressive load

b. Shear loadc. Tensile load d. b & c

14. Toe in & Toe out related with Ans. Wheel Alignment

15. Decreasing Angle of incidence from root to tip called a. Washed In

b. Washed Out

16. In monocoque construction Longeron has cross bracing members which have longitudinalstrip is called

a. Bulkhead b. Stringerc. Frames (Former)d. a & c

17. Rivet Specing

Ans . Distance between center of rivet hole to other rivet hole.

18. Monocoque fuselagea. Do not use former and stringerb. Economic & good for low stress aircraft.

19. Diagram of split flap

20. Question about corrosion a. Surface

b. Intergranular c. . D. As in b & Fretting corrosion

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21. When landing gear retracted which drag reducedAns. Parasite Drag

22. Fatigue Crack occurs during process of Al. Alloy Ans. Improper heat treatment

23. Field Rivet a. 2117 T

b. 2024 T c. 2017 T

24. Flame used for welding Al. Alloy A. Carburizing B. NeutralC. Oxidizing

25. Adequate protection of fabric depends upon Ans. Thickness of dope film

26. Nose heavy tendency Ans. CG forward of CP

27. Pitching increases Ans. Longitudinal instability

28. Stall strip location

Ans. Inboard of wing & forward

29. Which procedure must be followed when defueling A/C with swept back wings? a. Defuel all tanks at 1 st time.

b. Defuel outboard wing tank 1 st .c. Defuel inboard wing tank 1st.

30. Hydrometer reading at tenmp. 22 C, correction reading 28. Hydrometer reading 1.250. a. 1.222 b. 12.22 c. 1.278

31. What type of selector valve is one of the most commonly usd in hydraulic syatem to ;providefor simultaneous flow of fluid into & out of connected actuating unit. Ans. Four port closed center V/v

32. Stability about the axis which runs parallel to line of flight a. Lateral

b. Longitudinal

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c. Dihedral

33. Aerodynamic balancing is done on control surfacea. Adding wt. at hinge line of trailing edge b. Adding wt. aft hinge line of trailing

edge.34. Balancing of control surface

a. Buffeting b. c. wt/strength ratio

35. Correct dihedral angle can be determined byAns. Using dihedral board & bubble level along the front spar of each wing

36. Purpose of stall strip Is Ans. Stall inboard portion/ root area first

37. What is the purpose of compensating port or valve in brake master cylinder of independent brake system a. Assist in master cylinder piston return.

b. Prevent fluid from flowing back to reservoir c. Permit the fluid to flow forward or away from reservoir as temp. changes

38. Fuselage station Ans. Body station.

39. Breakdown of air occurs bya. Plain flap

b. Split flap

c. Fowler flap

40. Dutch roll definition Ans. Coz of dihedral of wing.

41. Trim tab cable a. 7x 19

b. 7x6 c. 7x7d. 7x19 + extraflexible

42. If PDR reports that aeroplane will be heavy on controls then Ans. Cable rigged tightly.

43. The metring pin in oleo shock strur serves toa. Lock the strut in down positionb. Retard the flow of oil as the struts are compressed

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c. Meter the amount of air in strut.

44. Nose wheel landing gear is provided with centering cam which center the wheel whileAns. Retraction

45. Cg placed to ahead a. Nose wheel vibrates

b. Excessive load on nose wheel c. all

46. Primary purpose of wheel balancing Ans. Prevent heavy spots & reduce vibration.

47. Torque link Ans . Correct wheel alignment

48. Autocollision light a. Less than 40 & 100 min/cycle

b. Less than 45 & 120 min/ cycle

49. Navigation Light a. Red left & right green & 140 Angle

b. 2 lights on wing 1 rearc. White-reard. all

50. Petroleum base hydraulic fluid is which colour Ans. Dyed Red,.

51. Excessive wear at center Ans. Overinflation

52. An A/C magnatic compass is swing to update the compass correction card when a. Annual inspection accomplished on aircraft

b. The compass is serviced c. Equipment is added that could effect compass deviationd. All

53. Which instruments have range marking a. ASI

b. CHT c. Bothd. Altimeter

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54. What must be done to an instrument panel that is supported by shock mounts

Ans. Banding straps must be installed across the instrument mount as current path.

55. Which marking colour is used to indicate if a cover glass has slipped Ans. White

56. What component of an autopilot system applies torque to control surface of an A/C a. Servo

b. Controller c. Gyro

57. Pitot tube a. At longitudinal axis & far forward as possible

b. Where vibration exist c. All

58. Static discharge damage Ans. Its local burning & pitting along trailing edge of wing

59. What is the recommended procedure for cleaning the fuel tank before welding a. Steam clean the tanlk interior

b. Purge tank with gas c. Flush the inside of tank with clear N2O.

60. How does Temp. affect fuel weight?

a. Cold fuel heavier/ gallon. b. Warm fuel is havier/ gallonc. Temp has no effect.

61. To prevent vapour lock in fuel lines at high altitude some aircraft are equipped witha. Vapour separator

b. Direct injection type carburetorc. Booster pump

62. If a bladder type fuel tank is to be left empty for a extended period of time then the inside oftank should be coated with film ofa. Engine oil

b. Linseed oilc. Fuel

63. BondingAns. Bonding with aircraft structure.

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64. What controls the inflation sequence into pneumatic deicer boots

a. Distributer V/v b. Shutter V/vc. Vaccum pump

65. What is the source of pressure for inflating deicer boots on reciprocating enginea. Vane type pump

b. Piston typec. Gear type

66. What method is usually employed to control the temp of an antiicing system using surfacecom b heatersa. Thermo cyclic switch

b. Thermo states in the cockpit

c.

Heater fuel shutoff v/v

67. Which of the following regulates the vaccum supplied by air pump to hold the deicing bootsdeflated when the pneumatic deicing system is off?a. Distributer V/v

b. Pressure regulatorc. Suction relief valve

68. Why should a chemical rain repellent not be used on dry windshield a. It will eitch glass

b. Restrict visibilityc. Glass crazing d. All

69. Trim tab usesAns . Cable drum

70. MTCS Ans. Altituded decreases & a/c moves forward.

71. Relief holes is provided at the intersection of center Ans. No allow crack to propogate & to reduce stress concentration.

72. Hard landing can be detected by a. Wrinkled wing

b. Bended strut

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c. Leak near revealed seam d. All.

73. Suction gauge is used in Ans Artificial Horizon

74. MTCS a. Override stops are

b. Primary stops in cockpit only . All.

75. Vortex generator preventsAns. Wing tip stalls

76. After brake bleeding, the serviceability is checked a. Brake should be applied both sided equally

b. Operation check done while taxing c. Wheel should rotate fully & freely when brake is not applied d. All

77. Tapered bolt installed in Al panel is subjected to stress,hole is inlarged,stress occouresAns. Compression.

78. Composite material used on many secondary structure in flight control surfaceAns. Fiber Glass

79. Defect Shake in wood is long crake Ans, Running between 2 Annular rings

80. MTCS Ans. Heavy portion of tyre.

81. Fail safe conceptAns. In which failure of one member, another member assemble its load.

82. MTCS about propeller torque a. Never follow engine torque

b. Always oppose engine torque c. Propeller torque assist during windmilling

83. Dye penetrant used in a. Ferrous b. Non Ferrous c. Non porous plastic d. All

84. Doorsoles made ofAns. Fiberglass & Bakelite

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85. Wing loading definition

Ans. Dividing its total wing platform area into maxi. Allowable gross weight.

86. Forward force Ans antidrag wire

87. Blushing may be caused by Ans. Temp. too low, humidity high, drafts over freely dopped surface, use of acetone asa thinner

88. Purpose of wing slat Ans. Reduce stall speed at higher angle of attack

89. Which of the following provides manual maneuverability of aircraft while the autopilot isengaged? a. Servo amplifier

b. Directional gyro c. Flight controller

90. Stall warning system are designed to being warning the pilot when a stall Ans. Is imminent

91. Arcing in an electrically heated windshield panel usually indicates a breakdown in Ans. Conductive Coating

92. Fine cracks on acrylic sheet are Ans Crazing

93. Painted band placed on cable adjacent to cable terminal is to denoteAns. Slippage of cable into fitting

94. Pilot reports PDR A/c has tendency to yaw Ans. Offset the rudder fin.

95. Limiting factor of aspect ratio Ans. Drag

96. When A/c load to more forward A. It will load more forward on nose L/G B. It will affect A/C stability C. It will cause dangerous spin. D. All

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97. Static Pressure is applied to

Ans. Static leak test

98. MTCS about Battery

99. MTCS about installation of Battery a. Prior to installation checks done like proper venting etc.

b. When NI-Cd battery used in place of Ld- Acid battery then firstlu clean acid with.D. All

100. Purpose of Debooster valve is toAns. Release pressure & release brake