Ame Ha Exam Dgca Part 1

7/27/2019 Ame Ha Exam Dgca Part 1

1/15

H.A.

QUESTIONS:

1. If excessive fogging is found in a/c cabin, what are its probable cause & remedial

action to be taken?2. Draw the schematic diagram f emergency L/G retraction system by using standly

hydraulic power?

3. Draw the schematic diagram of nitrogen charging trolley & name the parts. whatis the purpose of pressure reducing valve of regulator valve?

4. Write a note on cutting & drilling plastic material?

5. What type of a/c are low thickness aerofoil? Explain with reasons?6. What are the special precautions on AME should takes before releasing the a/c in

rainy season?

7. How is the L/G warning system tested on ground?

8. What are the inspection to be carried out on hose assemblies? What are the

precautions to be taken during installation?9. What are the different materials used one core materials in composites? Write a

few defects in composites which can be classified as minor & a/c released forflight with special precautions?

10. How is the level of fluid in a sock stout checked?

11. What is wing body heating system? Explain its operation?12. Write the procedure of fuel transfer from LH wing tank to RH wing tank?

13. Write the construction of wind screen. What is the purpose of heating it?

14. Write a note on Mach trim & speed trim?

15. Draw the diagram of shinning damper & explain its working?

16. What is the purpose of negative pressure relief valve & safety pressure valve?

OBJECTIVE QUESTIONS:

1. Static margin is the distance betweena) aerodynamic center & neutral point

b) aerodynamic center & center of gravity

c) center of pressure & center of gravity

d) neutral point and center of gravity

2. During nidder maintenance

a) chord line should be parallel to horizontal

b) hose over condition is called over balancec) hose down condition is called over balance

d) as in a & c

3. Loft does not depend on

a) aerofoil designb) amount of using dehedral

c) density of air & velocity


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d) wing surface area

4. Which of the following should also be checked in addition to hard landing inspectionitems, when the a/c makes hard landing

a) wing center section

b) arcing of propellerc) balancing of control surfaces

d) none

5. Artificial feel is used in

a) aileron control system

b) elevator control system

c) rudder systemd) all

6. Which of the following takes the structural loads in the wheel bay?

a) keel beamb) transverse beam

c) box beamd) all

7. Structural fusea) prevents primary structure damage

b) previcts shear loads

c) prevents overflow of current in the circuit

d) as in a & c

8. Color coding of O rings indicates

a) ageb) temp

c) vapour compatibility

d) all

9. The angle of attack where lift/drag ratio is maximum is called

a) ditedral

b) anhedralc) incidence

d) washin

10. Mark the correct statement

a) stall speed with c.g forward movement

b) stall speed with backward movement

c) stall speed does not change with c.g movement


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11.Station 185 indicates

a) 183 mm back of the nose or reference datum

b) 183 inch back of the reference datumc) 183 cm back of the nose or reference datum

d) 18.30 inch back of the nose or reference datum

12. Out of freezer life is associated with

a) epoxy resin

b) catalystc) prepeg

d) thermosetting

13. Amount of roll dies not depend ona) Angle of pitch

b) Angle of bank

c) Angle of turn

d) As in a & c

14. Damage of rivets around the head is usuallya) grey

b) white

c) brownd) as in a & c

15. The a/c is about to land, the fowler flap is extended, it will cause:

a) in lift

b) in drag

c) lift with nose drag movementd) normal

16. When the temperature is more than standard value, the TAS will be

a) higher

b) lower

c) first & then remains with effected

d) remains inaffected

17. Strain is measured bya) original length divided by change in length

b) force by areac) pressure multiplied with change in length

d) unit distortion of body

18. How selection provides

a) 250v ACb) 218 v AC & 121v respectively

c) 218v, 400 Hz AC


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d) none

19. Adverse load distribution requiresa) gross weight inspection

b) aft adverse loading check

c) forward adverse loading checkd) all the above

20. Which pressurization system component prevents cabin altitude being more than thea/c altitude

a) safety relief valve

b) negative pressure relief valve

c) compressor inlet sentor

21. A solid metallic sound in coin tap test of honeycomb structure indicates:

a) core damage

b) facing damagec) facing & core damage

d) separation of layers in honeycomb constructions

22. Smoke clearance system is used with

a) pneumatic systemsb) fire protection system

c) as in b and a pre-set temperature

23. Emergency exit devices located/associated witha) cabin entry doors

b) passenger entry doors

c) cargo entrance

24. To avoid tip stalling & making the aileron effective for complete flight, wing is

provided with was out, wash out meansa) incidence is angle is greater at wing tip than wing root

b) incidence angle is greater at wing root than wing tip

c) wing tip is a located ahead when componed to wing root

25. Under inflation is indicated by

a) shoulder wear out in the tyre

b) more tread wearc) high brake heat

26. Tail skid preventsa) tail section damage

b) rotation of a/c

c) as in a & c


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27. Static discharge damage is identified by

a) pits on the surface

b) wing tips & trailing edges are damagedc) round holes on the surface

d) usually found at wing tips, trailing edges & antennas

28. When proper jigs are not available, the smoothness of center of the a/c wing is

measured by

a) applying Vaseline & cellulose paperb) using a thin cord along the leading edge to trailing edge parallel to the line of

flight

c) veins a thin cord long the lending edge to trailing edge parallel to the lateral axis

d) both a & b

29. Boundary layer thickness is minimum where

a) airflow gets zero to max velocity change

b) airflow velocity is maximumc)

d)

30. At high altitudes, presence of foam in hydraulic fluid is caused by

a) defective pressurization systemb) no hydraulic fluid in the system

c) low pr in the system

31. Purpose of surge tank isa) it protects tank structure damage

b) it allows fuel to flow into the tank which is at a laterally lower level

c) it collects over flowing fueld) as in b & c

32. With in airspeed

a) induced drag more than parasite drag

b) parasite drag more than induced drag

c) induced & parasite drag will be same

d) induced & parasite drag will not be affected

33. Surface hardness of steel

a) with of carbon contentb) only upto a certain point with of carbon content

c) max for wrought irond) depends on the process involved

34. Parts which are cold worked should not bea) welded

b) kept in room with high our temp


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c) kept in air conditioned room

d)

35. Corrosion on spot welding seam is detected by

a) X-ray

b) Ultrasonicc) Straight edge

d) Point peeling off


a) spoilers are used with ailerons for lateral stability about longitudinal axis

b) flaps & spoilers are auxiliary control surfaces used for lateral stability

c) d) all the above

37. Contamination of hydraulic fluid is found by

a) viscosityb) flash point

c) moisture contentd) all the above

38. Mark the correct statementa) damage of nose cone does not affect flt of an a/c

b) damage to secondary structure like wing tip & nose cone does not affect the flt of

a/c

c) damage to seat & seat supporting structure affect flightd) none of the above

39. Mark the correct statement regarding reynolds numbera) if the Reys no is high then kinematic velocity is high

b) higher the Reys No., higher the kinematic viscosity

c) higher the Reys No, smaller the kinematic viscosityd) higher the Reys No. smaller the kinematic viscosity & velocity

40. Vortex generators are aerofoils installed on wing upper surface because

a) laminar flow is more difficult to separate than turbulent flowb) turbulent flow is more difficult to separate than laminar flow

c)

d)

41. Balance panels are operated

a) hydraulicallyb) manually

c) only in turbulent weather

d) to balance the ailesins


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a) steel & magnesium is used for secondary structural members

b) fiberglass & magnesium is used for secondary structural membersc) Al honey comb & fiberglass honey comb structure is used for secondary structural

member

d) Al is used for a particular type of lead only


a) if one rivet is tripped, then the adjacent rivets are also tripped in the samedirection

b) bearing failure occurs at rivet shank

c) shearing failure occurs at rivet hole

44. Turn & slip indicator measure

a) the amount of tum

b) the rate of tum

c) in slip the amount of tum is too lowd) in skid the amount of tum is too high

45. The acceptable deviation in magnetic compass due to local effects the aircraft is

a) 1

b) 2

c) 3

d) 5


a) phosphating on steels prevents corrosion

b) chromatizing is done on aluminium as a protective treatment against corrosionc) cadmium plating on aluminium penetrates into the base metal there by giving

corrosion resistance

d) all the above

47. In the operation of VSI

a) diaphragm expands in climbingb) diaphragm shrinks in climbing

c) diaphragm expands & shrinks in level flt

d) both b & c


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1. Fail safe concept if one members fails other takes the concept

2. Flexible hose installation is secured in 12 inches

3. Permissible elongation to chains in% - 2%

4. Spongy operation of the brakes may be caused by air in the system

5. Grabing of brakesa) wearing the brake liners

b) mster cylinder return sprege

c) brake rod return mechanism may be week

6. Changing direction of control

a) pulleys

b) fail lead

7. MIL-D-7850 fungeside for collulose accratic hydralic the fungiside designated in this

specification isa) copper sulphate

b) zinc dimethyl dith carbonate

8. FLT is placed in

a) as far as aft

b) front

c) as per manufacturers

9. Flap co-efficient of lift 1234

a) slotted, fowler, plates, spletb) fowler, slotted, splet, plates

10. Rudder horn materiala) magnesium

b) Al alloy cart

c) Al alloy

11. Trikloven cleaning is used on

a) titanium

b) titanium alloyc) Al

d) Al alloy

12. OR compass returns to normal position

a) dead beat

b) liquid swinelling


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13. Nicad battery spillage is cleaned by

a) dilute acetic acid

14. Which marker is used on exhaust drills

a) lead pencil (uncarbondied pencil)

b) blue

15. A/c oxygen system should not be service when

a) leakageb) contaminated fitting

16. Squeezing brakes because of brake pads worn out & rivets touching the metal

17. Draging of brakes

a) wearing of brake linings

b) master cylinder returns spring weak

c) brake return spring is weakd) bubble in the flux

18. Material of 4350 -

19. Material used for the a/c skina) 2024

b) 6056

c) 9014

d) 5056

20. Densily & alectude

a) high altitude high density a/c moves fastb) high altitude low density a/c moves fast

21. British manufactured a/c, when L/G retracted & locks what light comes ona) amber

b) no light

c) green

d) blue

22. In connect acrylic a/c wind shield. After tightening & the screw is loosened by

a) one turnb) half turn

c) one & half turn

d) two turn

23. After heavy landing, which of the following are motion

a) wrinkles on upper surface of the wing

b) bent L/G stint


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24. A suction gage must be installed in cockpit if the a/c fitted with what type of gage

a) manifold pressure gage

b) artificial horizonc) altimeter

d) VSI

25. Which type of snow is mostly used

a) 2024

b) 2014c) 2117

26. Turn & slip indicator works on which axis

a) Yaw axisb) Lateral axis

c) Longitudinal axis

27. Tab on leading edge is toa) to stall lines position first than outer portion

b) to reduce stalling speedc) to reduce angle of lock

28. Rigging is done for the purpose ofa) to respond the control surface properly with lock pit controls

29. Quadrants are used to

a) change the direction

30. Load factor

a) ratio of the wing load to a/c operating weightb) ratio of the wing load to a/c empty weight

31. which is most easily & widely useda) control cable

b) push pull rods

c) control rods

32. If cable is to deflect 3

a) fan leads are used

b) pressure seals

33. What control system is used in the operation of pull

a) Drum

34. Direct conal stability

a) dorsal fin is used

b) wings


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c) dihedral

35. In V.S.Ia) capsule has an accurately measured hole

b) capsule is encapsulated in or cause

c) pressure lagsd) b & c are correct

36. Drag created other than on lifting surfacesa) induced drag

b) profile drag

c) parasite & induced

37. As the C.G moves forward

a) max load on nose landing gear

38. On wing skin is sinoted toa) spars

b) -c) ribs

d) all the above

39. Tapered wing

40. Fall safe

a) complex structure one member falls other member takes the load

41. Welding neutral flame is used on

a) steelb) Al

c) Magnesium

42. Para static tube installation

a) where turbulent air less

b) wing edges

c) front of the a/cd) a & c are correct

43. Acrylic wind shield cracka) radial crack

44. In which actuator spring chamber is useda) single acting

b) double acting

c) 3 way actuate

d) b & c are correct


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45. Paint on a swaged joint is to disclose

a) loosening of cable

46. failure of wooden structure

47. The members used across longeronsa) stringers

b) bulk heads

48. Fretting corrosion on bolted joints on Al

a) black

b) white

c) brownd) green

49. Galvanic corrosion on

a) piano hinges

50. Dope thicknessa) thickness of the lope

b) No of coats of lope

51. Pitot testing the pressure is applied and leak should not be more than

52. What is the free air temp in respect to a/c instrument

a) air temp over the wingb) air flowing around the fluid

c) air which is compressed just before the a/c

d) air just before reaches the a/c


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JET ENGINE

1. Duplex ball bearings takesa) axial and radial axis efficiently

b) axial load only

c) fail safe loadingd)

2. The fig shows a modern turbofan engine, the purpose at the vertex device isa) to dissipate the heat from the fan cowl

b) to streamline the airflow over the wing surface

c) to reduce the turbulance of airflow over the wind during low speeds of flight

d) to reduce the turbulance of airflow over the wind during high speeds of flight

3. A modern turbotantengine fitted a/c flying from Delhi to Madras. The temperature at

Delhi is 15C, while in Madrasis 28C. to achieve the same power at Madras.

a) throttle should be adjusted fwd when approaching at Madrasb) throttle should be retarded when approaching madras

c) no adjustment is necessary throughout the flightd) throttle can be adjusted either fwd or retarded to keep the Ni rpm constant

4. Match the following:a) X-40 steel

b) Rene 84 Co

c) 6-2-42 Ni

d) A286 Ti

5. Fig.a) pressure is high in tube Ab) pressure is high in tube B

c) pressure is same through

d) there will be rise in pressure in tube B due to turbulance

6. In flight CSD oil temp light comes ON and the pilot disconnected the CSD. Then it

can be connected back

a) only on groundb) only in flight

c) either on ground or in flight

d) automatically connected after oil temp is reduced

7. Starter has two holes, for

a) alignmentb) breather sump vent

c)

d)


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8. For the same torque, starter is heavier than starter generator,

a) starter generator has two separate windings

9. In Bryton Cycie DE showsFig

a) Expansion thru nozzle

10. Ni-metalic sensing is fitted on

a) pressure regulating valve

b) FCOC (fuel control oil cooler)c) Min flow valve

d)

11. A) In FCU, variation in temperatures is compensated by Bi-mettalic disc (or)

12. If the metal found in the chip detector gives white light while burning, it confirms the

presence of

a) steelb) Mg

c) Cr d)

13. Exhaust nozzle area is changed due to heat after long operation, it will causea) the thrust to reduce for the amount of fuel flow

b) the thrust will increase with the increase in EGT

c) no appriciable change in thrust or EGT as the area is same for that temperature

d) the thrust will increase due to increase of fuel flow due to more airflow throughinlet

14. CODEP meansa) cobalt coating

b) coating given to LPT blades

c) coating given to improve the corrosion resistance in elevated temp of turbineblades

d) fuel additive

15. Mark the correct statementa) compressors are loaded in front stages

b) compressors are loaded more at rear stages

c) compressor are equally loadedd)

16. Kevlar is used in fan casing fabrication. Al foil presence in kevlara) prevent stress

b) acts as a lightening arrester

c) used in light frequency operation

d)


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17. BSI of HPT is done thorough the holes given. During insp the HPT shaft is rotated by

a) remove starter and rotate through the starter engagement gears

b) drive pad is given for this purpose in the AGB section of these enginesc) after removing the combustion chamber only, BSI can be done

d) 7/8 socket and spanner attached in the hand cracking pad

18. During water methanol injection at which place will increase the temperature

a) compressor inlet

b) diffuserc) compressor and diffuser

d)

19. Pressurising valve setting at low spring tension causes (or) adjustment of P&D valveon FCU is lower than the normal then..

a) hot start

b) hung start

c)

20. Fog. Of Thrust reverseridentify the componenta) blocker door

b) drag plate

c) T/R unlock pop-out indicator

21. Fig Identify the bolt used in Hot Section

a) A is used in hot section

b) B is used in hot sectionc) B or C are used in hot section

d) None of the above

22. Fig. Impeller tip speed of centrifugal compressor limits the performance of the

compressor, this is because..

a) tip speed reaching mach nob) excessive compression

c)

23. Fig. Of Magnetic seaa) A is magnetic ring

b) B is magnetic ring

c) C is magnetic ring

24. Mark the correct statement regarding usage of the Helical gears used in Turbo Prop

gear boxa) helical gears are easy to manufacture and economical

b) helical gears takes more loads because they are straight

Ame Ha Exam Dgca Part 1

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