Heavy Aeroplane Feb 2012

7/30/2019 Heavy Aeroplane Feb 2012

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HEAVY AEROPLANE FEB 2012

1) Structural continuity of fuselage area between the landing gear wheel well is achieved bya) Longitudinal beamb) Keel beamc) Transverse beamd) Box beam

2) In modern HA lavatory and gallery, water tank is pressurized bya) Cabin airb) Pneumatic air input from APU(on bleed air from engine)c) Air-conditioningd) Pressurization

3) A/c is accelerating towards eastern heading , the compass isa) Compass needle has an apparent turn towards northb) Compass needle has apparent turn towards southc) Dip in compass card

4) Chemical state of oxygen system is :a) Gaseous state oxygenb) Diluter demand typec) Solid state oxygend) Continuous flow system

5) In modern HA , lower panel of wing mode of Kevlar composite is repaired with fibre glassbecause

a) Kevlar cannot be repairedb) If Kevlar is used, moisture will absorbedc) Boron is usedd) None

6) In hydraulic system the digran represent isa) Shuttle valveb) NRVc) Check valve

7) Spoiler mixer is useda) Operate in conjunction with aileron inputb) Operate in conjunction with flapc) It is in bottom surfaced) All8) In modern jet A/C to ensure continuous airworthinessa, the inspection programme for all

structure to detect fatique damage timely is known as

a) Accidental damage rafing(ADR)b) Damage tolerance rafing (DTR)c) Environmental detection rafing(EDR)d) Crack growth


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9) In the rate of selection of pressurization system regulates rate of flow10)In ACM cooling is obtained by

a) Outlet of compressorb) Outlet of primary heat exchangerc) Outlet of secondary heat exchangerd) Outlet of turbine

11)Difference between speed control servo and position control servo isa) Tacho genb) Pot meterc) Servo motord) Error dectector

12)Motor works even after L/G is extendeda) Uplock switch defectiveb) Down lock switch defectivec) Motor defective

13)If rivet is exceesively strong in shear that occurs ina) Shear failureb) Bearing failurec) Structural failured) Fail safe

14)In large A/c tension of the flight control is taken bya) Tension meter directlyb) Tensiometer reading, comparing with manufacture limitc) Tensiometer reading comparing with manufacturer instruction and limit(+) or (-)d) None15)In modern A/C lateral stability is achieved by

a) Use of sweep backb) By use of longitudinal dihedralc) Use of incidenced) Use of angle of attack

16)In HA parking brake is applied bya) Appling pressure on rudder pedalb) Applying pressure on both rudder pedalc) Pulling out brake leverd) None

17)Landing gear attached to wing usinga) Close tolerance boltb) Interference fitsc) Both a and bd) Permanent fastener

18)In modern HA oxygen system is not required below this __________altitude isa) 7000Ft


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b) 8000Ftc) 15000Ftd) 35000Ft

19)The skin takes load , the type of constructiona) semi monocoqueb) monocoquec) all

20)in L/G system the restricted flow of fluid from upper chamber isa) built in snubber unitb) check valvec) metering pind) NRU21)In A/C const pressure hydraulic system cycles more frequently than usal and no fluid leakage

can be detected the most probable cause is

a) High relief valve settingb) Pump volume output too highc) low accumulator air pre loadd) Obstruction in reservoir line

22)In hydraulic system the seals colour code with mineral based fluid isa) Blue dashb) Green dashc) Yellow dotd) White dash

23)The angle of attack at which tail movements are equal to wing movements is calleda) Neutral pointb) Trim pointc) Aerodynamic centred) Centre of pressure

24)Smoke clearance switch is related toa) Pressurization systemb) Air conditioning systemc) Fire systemd) All

25)In modern jet A/C balance tab weight can be known bya) Taking out weights and measuring it outsideb) Reading the inspection plate attached over the tabc) Ask the manufactured) All.

26)Static margin is :-a) Distance between centre of pressure to neutral point.b) Distance between centre of gravity to netral point.


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c) Distance are same between centre of pressure and neutral point.d) Distance are not same between C.G and neutral point.

27)In the event of pressurization control failure,protection is provided by :-a)Possitive PRV.

b)Negative PRV.

c)Servo relief valve.

d)Check valve

28) What type of inspection should br used to check for water in the honeycomb structure of a

composite is :-

a)Magnectic Particle inspection.

b)Coin tap.

c)shake and listen for sound of water.

d)x-ray (radiography).

29) During operational check of pneumatic de-icing system,vacuum operated gauges begin to

operate,when de-icing system has not been turned ON if indicates :-

a)Gauges are accurately reading .

b)De-icing system is serviced.

c)One or more check valves have failed to close or reverse flow through the instrument is occurring.

d)All are correct.

30) The dip in the magnet is caused by :-

a)Horizontal component.

b)Vertical component.

c)As in (2) Maximum at the equator and minimum at the poles.

d)As in (1) minimum at the equator and maximum at the poles.

31) in vapour cycle system the purpose of evapourator is to

a) expansion takes place

b)convert liquid Freon to gases Freon thus lower the temperature

c) convert gases Freon to liquid Freon thus increases the temperature

d) liquid to gases increases the volume , decreases the cooling


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32)in heavy aircraft , the rate of temperature rise is based on

a) thermocouple

b)thermistor

c)temperature

d)tungsten

33) in HA what is not commom in hydraulic and pneumatic system

a) restrictor valve

b)control valve

c) relief valve

d)accumulator

34)MTCS regarding anodizing,chromatizingand phosphating

a)Mg,Al and steel respectrively

b)Al,Mg and steel respectively

c) steel, Al ,Mg respectively

d)Mg,steel,Al respectively

35)in modern a/c the criss-cross differential movement of the aileron is

a) the difference btwn the uptravel of the left aileron and uptravel of the right right aileron

b) the difference btwn the uptravel of the left aileron and down travel of the right right aileron

c) the difference btwn the uptravel of the left aileron and down travel aileron from their neutral point

d) no such aileron is used

36)pneumatic system air is used for

a) engine starting

b) portable water system pressurization

c) hydraulic tank pressurization

d) all


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37) the components of wind shield heating

a) indicating lights

b)wind shield control unit and temperature regulator

c)windshield control, auto transformer CB, heat control relays and indicator

d) heat control toggle

38) in HA vapour cycle system of cooling, cabin control cool was not effective the reason is

a)compressor failed

b)expansion heat sensor failed

c)cooling fan failed

d) all

39) in modern HA de pressurization of the plane is by

a)dump valve

b) safety relief valve

c)outflow valve

d) all

40) the following foam which uses hot wire cutter

a)utherane

b)pvc

c)Styrofoam

d) all

41) in moden A/C the left is heavy the condition would be

a)wash in right and left wing or wash out or both

b)wash in left wing and wash out right wing or both

c)wash in the right wing only


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d) wash in the left wing only

42) in modern A/C air bleeding of the brake is by

1)by operating a hydraulic unit and watch

43)the operating cabin pressurization of modern A/C the range of pressurized aircraft are

a) isobaric ,differential amd max. differential

b) differential , unpressurised and isobaric

c) ambiet , unpressurised and isobaric

d) unpressurised, differential and ambient

44)in HA on ground un pressurized mode

a)the outflow valve open full for re cycle operation

b) the outflow valve open full for ground air conditioning purpose

c) the outflow valve open fill only when flying condition

45) in de icer boot opration pressure is applied and then it is exhausted and suction is applied when

pressure reduces to

a)1 psi appro.

b)2 psi appro.

c)3 psi appro.

d) 5 psi appro

46)in modern A/C aluminium screen over an armid is given from

a) improved strength

b)lightening protection

c)increase weight

d)decrease weight

47) de-icer system of modern A/C suction pressure line is

a)suction line separate and pressure line separate


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b)suction and pressure line are the same

c)all wrong

48) in HA plate between front and rear apar is

a)has tapered thickness

b)butt spliced

c) tapered thickness and butt spliced

d) has tapererd thickness with flush splicied

49) in modern A/C the the left and rightwing both is fixed to center wing by

a) spliced and riveted

b)spliced and flared

c)spliced and welded

d)all

50)to prevent wing twisting

a) root end has thick sheet

b) root end has thin sheet

c)tip has thick sheet

d) none

51)in the landing gear system the sudden surge extension of landing gear snubbed by

a) inbilt snubber unit

b) check vailve

c)orifice check valve in upline

d)orifice check valve is down line

52) in modern aircraft tab is used for reducing control loads at high speed is

a) servo tab

b)balance tab


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c) spring tab

d)all correct and trim tab

53)in modern aircraft expansion slots are cut for rotating brake disc

a) to prevent excessive heat dissipation

b)to prevent warping from heat

c) to enhance heat dissipation

d) to increase efficiency of braking if brakes are overheated

54)in two phase induction motor type servo motor of autopilotsystem reference phase is supplied by

a)26v, 50Hz

b)115v,400Hz

240v,400Hz

d)220v,50Hz

55)the location of centre of pressure is the leveling of

a) camber

b)lift co-efficient

c)both 1 and 2 and varies with the angle of attack

56)in modern aircraft , electrical bonding in composites

a) not required

b)if not done lightening strike will evapourate the resin and lewave the base composite

c)both 1 and 2

d) none

57) in modern A/C during manual landing gear extension when the uplock is released

a) cable connected in down lock to extend the gear

b)rod connected in down lock to extend the gear

c)mechanical movement of gear uplock


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d)free fall

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Heavy Aeroplane Feb 2012