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DGCA FEB-2015 HEAVY AEROPLANE

1) Which of these methods may be

used to inspect fibreglass/ honeycomb

structures for entrapped water?

1. Acoustic Emission Monitoring

2. X-Ray

3. Backlighting

a. 1 & 2

b. 1 & 3

c. 2 & 3

2) One method of inspecting laminated

structure that has been subjected to

damage is to

a. strip the damaged area of all paint

and shine a strong light through the

structure.

b. use dye penetrant inspection

procedures, exposing the entire

damaged area to the penetrant solution.

c. use an eddy current probe o n both

sides of the damaged area.

3) What is the material layer used with

the vacuum bag pressure system to

absorb excess resin during curing

called?

a. Bleeder

b. Breather

c. Release

4) The preferred way to make

permanent repairs on composite is by

a. bonding on metal or cured composite

patches

b. riveting on metal or cured composite

patches

c. laminating on new repair plies.

5) The coefficient of expansion of most

plastic enclosure material is

a. greater than both steel and

aluminium

b. greater than steel but less than

aluminium

c. less than either steel or aluminium

6) What is the most common method of

cementing transparent plastics?

a. Heat method

b. Soak method

c. Bevel method

7) Riveting is to be carried out on a

piece of sheet metal, the minimum edge

distance and spacing should be

a. Edge distance should be 4D and

spacing 3D.

b. Edge distance should be 2D and

spacing for single row of rivet 3D.

c. Edge distance should be 5D and

spacing 3D.

8) What is indicated by a black

smoky residue streaming back from some of the rivets on an aircraft?

a. The rivets were excessively work

hardened during installation.

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b. Fretting corrosion is occurring

between the rivets and the skin.

c. Exfoliation corrosion is occurring

inside the structure.

9) Longerons used in an aircraft

fuselage takes which type of load

a. Compression

c. Bending

d. Torsion

e. Shear

10) Which rivet is used for riveting

magnesium alloy structures?

a. 2117-AD

b. 2017-D

c. 5056-B

11) An airplane which has good

longitudinal stability should have a

minimum tendency to

a. Roll

b. Pitch

c. Yaw

12) If the right wing of a monoplane is

improperly rigged to a greater angle of

incidence than designated in the

manufacturers specifications, it will

cause the

a. Airplane to be off balance both

laterally and directionally

b. Airplane to pitch and roll about the

lateral axis

c. Right wing to have both an increased

lift and a decreased drag.

13) A width measurement left or right

of, and parallel to the vertical centerline

a. Water line

b. Butt line

14) When inspecting a control cable

turnbuckle for proper installation,

determine that

a. No more than four threads are

exposed on either side of the turnbuckle

barrel

b. The terminal end threads are visible

through the safety holes in the barrel

c. The safety wire ends are wrapped in

a minimum of four turns around the

terminal end shanks.

15) When used in a close proximity to

magnetic compasses, cotter pins are

made of what material?

a. Anodized aluminium alloy

b. Corrosion resisting steel

c. Cadmium plated low carbon steel

16) A tension regulator in the flight

control cable system of a large all metal

aircraft is used to

a. Increase the cable tension in cold

weather

b. Provide a means of changing the

cable tension in flight

c. Retain a set tension

17) Power boost brake systems are

used on aircraft that have

a. High landing speeds

b. Low normal hydraulic system

pressure

c. More than one brake assembly per

axle




18) An automatic damping action

occurs at the steering damper if for any

reason the flow of high pressure fluid is

removed from the

a. outlet of the steering damper

b. inlet of the steering damper

c. replenishing check valve

19) When an air-oil type of landing

gear shock strut is used the extension

strock is dampened by

a. By means of various valves, orifices

and damping device (ref: 15A-313)

b. Fluid being forced through a

narrowing orifice

c. By forcing air from one chamber into

another

20) If the extended longitudinal axis of

the main landing gear wheel assemblies

intersects aft of the aircraft, the wheels

can be termed as having

a. toe-out

b. toe-in

c. negative camber

21) Chines are used on some aircraft

nose wheel tires to help

a. nose gear extension at higher air

speeds

b. reduce the possibility of

hydroplaning

c. deflect water away from the fuselage

22) On most aircraft, the oil level of an

air oleo shock strut is checked by

a. removing the oil filler plug and

inserting a gauge

b. measuring the length of the strut

extension with a certain air pressure in

the strut

c. releasing the air and seeing that the

oil is to the level of the filler plug

23) When installing a chevron type seal

in an aircraft hydraulic cylinder, the

open side of the seal should face

a. opposite the direction of fluid

pressure

b. up or forward when the unit is

installed in a horizontal position

c. the direction of fluid pressure

24) A fully charged hydraulic

accumulator

a. Dampens pressure surges

b. Supplement the system pump

c. Supply fluid under pressure to make

up for small leaks in the system

d. All the above (ref: AMR-360)

25) Relief valves are used in pneumatic

systems

a. for one direction flow control

b. to reduce the rate of flow

c. as damage preventing units

26) An aircraft pneumatic system,

which incorporates an engine driven

multistage reciprocating compressors

also requires

a. an oil separator

b. a surge chamber

c. a moisture separator




27) The first step involved in removing

an accumulator from an aircraft is

a. relieve system pressure

b. discharge the preload

c. drain the reservoir

28) The air that is expended and no

longer needed when an actuating unit is

operated in a pneumatic system is

a. exhausted or dumped, usually

overboard

b. returned to the compressor

c. changed or pressurised for use during

the next operating cycle.

29) For use in pressurized aircraft

which is generally the least

complicated and requires the least

maintenance

a. Chemical candles

b. High pressure oxygen system

c. Low pressure oxygen system

30) What component of a

pressurisation system prevents the

cabin altitude from becoming higher

than airplane altitude?

a. Cabin rate of descend control

b. Negative pressure relief valve

c. Positive pressure relief valve

31) Hydraulic reservoirs are installed

with baffles to prevent ----- caused by

changes in the altitude of the aircraft

a. Vapours

b. Surging and vortexing(ref: 15A-318)

c, Starvation

32) Antiskid braking systems are

generally armed by

a. a centrifugal switch

b. a switch in the cockpit

c. the rotation of the wheels above a

certain speed.

33) Landing gear warning devices

usually provide which of the following

indications?

a. Red light for unsafe gear, no light for

gear down, green light for gear up

b. Green light for gear up and down,

red light for unsafe gear

c. Red light for unsafe gear, green light

for gear down, no light for gear up

34) When a landing gear safety switch

on a main gear strut closes at liftoff,

which system is deactivated?

a. Landing gear position system

b. Antiskid system

c. Aural warning system

35) Why are the tubes in deicer boots

alternatively inflated?

a. To keep disturbance of the airflow to

a minimum

b. Alternate inflation of deicer boot

tubes does not disturb airflow

c. Alternate inflation of deicer boot

tubes relieves load on the air pump [[{{ Dear Followers If you have previous year

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36) Pascals law states that a. Pressure applied to any part of a

confined liquid is transmitted with

undiminished intensity to every other

part(ref:15A-309)

37) Datum for easy reference of an

airplane is found in

a. Manufactures data

b. Type certificate data sheet

c. Airplane Manual

d. All the above

38) Deformation of a material under

stress is termed as

a. Strain

39) A major longitudinal fuselage

component in the wing center section

and wheel well area

a. Keel beam(ref:AMR-27)

40) Width measurement left or right of,

and parallel to vertical center line

a. Butt line

41) A design whereby components are

made in two parts and are joined

together by riveting or bonding. Each

half of the two structural parts is

capable of carrying the full required

structural load of the assembly are

called

a. Damage tolerant

b. Fail safe(ref:AMR-27)

42) The category in which each

airplane is certified may be readily

found in

a. Type certificate data sheet

b. Manufacturers data

c. as in a & Airworthiness certificate found in the cockpit

d. All the above

43) A piece, part or structure having

smooth streamlined contour used to

cover a component

a. Fairing

b. Cowling

c. Fair cowls

44) Aircraft sped below Mach no. 0.75

is called

a. Subsonic

45) Spanwise flow off air is controlled

by means of

a. Winglets

b. Wing fences

46) Plastics which soften on application

of heat are called

a. Thermoplastic

47) Bends in a sheet metal should be

made

a. In-line with grain

b. Across the grain(ref:AMR-228)




48) If excessive corrosion is found in a

component it should be

a. Repaired

b. Replaced(ref: AMR-242)

49) Flight loads are generally divided

into

a. Maneuvering loads and gust

loads(ref: AMR-16)

50) Some of the properties and

characteristics of hydraulic fluid are

a. Viscosity

b. Chemical Stability

c. Flash point & Fire point

d. All the above(ref:15A-309)

51) Point at which air ceases to flow

smoothly over the top surface and

begins to burble or eddy

a. Critical

b. Transition

52) Icing affects on aircraft may cause

a. Increase in drag & reduced lift

b. Hampers true instrument readings

c. As in a & control surfaces become unbalanced

d. All the above

53) Deicer boots are made of

conductive neoprene

a. To dissipate static electricity charges

b. Provide resistance to deterioration

c. Both a & b

54) Windshield deicing consists of

a. Windshield auto transformers

b. Windshield control units

c. Temperature sensing elements or

thermistors

d. All the above(ref:15A-300)

55) Scratch on windshield is measured

by

a. Optical micrometer

56) Vane type rotor consists of

a. Four vanes, a hollow steel rotor with

slots or vanes & a coupling to turn the

rotor

57) Pressure regulation consists of

a. Pressure relief valve, pressure

regulator & a pressure gauge(ref:15A-

323)

58) Accumulators are precharged with

air to a pressure ----of system pressure

a.

b.

c. 1/3




59) Load factor is defined as:

a. Ratio of the total load supported by

the wing to the weight of the aircraft

60) Windshield & radome de-icing

consists of

a. Electrical & alcohol

b. Thermal & Electrical

61) MTCS regarding titanium

a. Is 60% lighter than aluminium

b. Is having low thermal expansion and

resistance to corrosion

c. Is having low thermal expansion and

high thermal conductivity

62) If an aircraft metal component

encounters extensive corrosion then it

should be considered as:

a. Negligible

b. Repairable c. Non-repairable

63) Station numbers are provided in an

aircraft for:

a. Locating components and reference

points

b. Assembly purpose

64) Process by which surface of

titanium can be hardened without

affecting the internal condition

a. Case hardening b. Nitriding c.

Carburizing d. ATA

65) Silicon rubber is compatible with

a. Vegetable base hydraulic fluid

b. Mineral base hydraulic fluid

c. Synthetic hydrocarbon base

hydraulic fluid

66) When an aircraft flies through

turbulence what should be checked

a. Wing to fuselage, tail to fuselage and

engine mount areas

67) When an aircraft suspected of hard

landing

a. Inspect upper and lower skin for

bends and wrinkles with permanent set

68) Nomex is a

a. Core honeycomb material

69) MTCS regarding thermocouple:

a. It works on the same principle of

thermal switch

b. It consists of a relay box and

warning lights

c. Number of thermocouples installed

in an area is irrespective of the size of

the location

70) In which air conditioning system

engine bleed air is cooled with ambient

for cabin cooling

a. Air cycle machine

b. Vapour cycle machine

73) For testing hardness of a material

the method used is resistance to

a. Penetration




74) Icing formed in flight will have the

following effect:

a. Ice buildup increases drag and

reduces lift

b. It helps in true instrument reading

c. as in a and control surfaces become unbalanced

75) If nickel-cadmium battery does not

show full power after charging

a. Cell balancing should be done

76) Metal fasteners used with carbon/

graphite composite material should be

of

a. Material such as Ti or CRS

77) Wing lower panels are made of

Kevlar composite; manufacturers

recommend not to repair due to

a. Repaired portion absorbs moisture

resulting in matrix failure

78) A small control surface attached to

the primary control surface moved by

the cockpit controls in a direction

opposite to that of the primary control

surface is:

a. Trim Tab c. Anti servo Tab

b. Servo tab

79) When the leading edge of a

stabilator set to upward position, this is

known as:

a. Nose up trim

b. Nose down trim c. Underbalance

80) If rivets are excessively strong in

shear this results in:

a. Bearing failure (ref:15A-176)

81) Regarding Tensiometer (ref:15A-

70)

82) Double action hand pumps:

a. Produce fluid flow and pressure on

each stroke of the pump (ref:15A-318)

83) During gross weight and balance

check:

a. Forward portion of the aircraft is

loaded

b. Rear portion of the aircraft is loaded

84) Flight director in flight is used for:

a. Providing altitude and attitude

through all phases

b. Assisting pilot during instrument

approach

c. To lock the aircraft altitude in cruise

85) MTCS regarding DME

a. Operates in UHF range

b. Provides constant visual indication

of distance from ground station

c. When DME has locked on a ground

station it will stop searching and a

green flag appears

c. ATA

86) Altitude measurement used to

determine the amount of lift produced

by an aerofoil or performance the

engine:

a. Cabin altitude




b. Pressure altitude

c. Density altitude

d. Standard altitude

87) Stress caused by tension and

compression

a. Bending Stress

88) Purpose of wing slats is:

a. To reduce the wing stalling speed

b. Increase take-off speed

89) Constant displacement type

hydraulic pump:

a. Delivers a uniform rate of fluid flow

90) What function does an absolute

pressure regulator perform in a

pneumatic system

a. Regulates compressor inlet air

thereby providing stabilized source of

air for the compressor

91) MTCS regarding stressed skin

construction

92) Lift produced by a body displacing

a greater weight of air than its own

weight

a. Aerodynamic b. Aerostatic

93) Longitudinally stable aircrafts have

a. C.P ahead of C.G

b. C.G ahead of C.P

c. Longitudinal stability is along

longitudinal axis and about lateral axis

d. Both b & c

94) Regarding autopilot

95) Chemical treatment of aluminium

alloys to prevent corrosion and increase

paint bonding

a. Alodizing

b. Anodizing

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