(a) To
see mechanical integrity of the engine
(b) Instrument
check
(c) Power
check
(d) All
are correct
2. Modern aircraft engines
(a) Have
many drain holes at different location to drain volatile fluid used inengine
(b) There
are no such drain holes provided
(c) FCOC
has provision for draining
(d) Both
A and C are correct
3. MCS
(a) Compressor
and turbine discs are forged by powder metallurgy
(b) Compressor
blades and vanes are generally cast
(c) Turbine
blades and vanes are made by lost wax method
(d) All
are correct
4. Run down time is (RR 261)
(a) Time
taken by the engine to come to rest after closing the shut off valve
(b) It
gives indication of wear or rubbing inside the engine
(c) Wind
velocity and direction may affect the RDT of an engine
(d) All
are correct
5. Sound suppressors used in gas turbine engine to
(a) Reduce
energy
(b) Increases
frequency
(c) Increase
eddies
(d) All
are correct
6. MCS regarding jet cal analyzer
(a) Used
to check EG thermocouple during engine run or without running
(b) Used
to check continuity and resistance of the EGT circuit during engine run only
(c) Used
to check % rpm. During engine run only
(d) Both
B and C are correct
7. Oil pressure indicating system is
(a) Auto
sync
(b) Thermocouple
(c) Resistance
(d) Synchronous
8. Major disadvantage of air turbine starter is
(a) It
produces low torque
(b) Requires
high volume of airflow
(c) Complex
construction
(d) Limited
to small engine
9. MCS
(a) Igniter
plugs have problem of corrosion of case, and after prolonged use it get eroded
(b) The
audible test for proper ignition check is not possible in synchronous ignition
(c) Iridium
inserts are placed in the tip to prolong its lift
(d) All
are correct
Answer: 1 – c, 2 – d, 3 – d, 4 – d, 5 – b, 6 – c, 7 – a, 8 –
b, 9 – d.
10. Engine inference
(a) Nozzle
diaphragm area is measured at the exit of the vanes
(b) Total
outlet area measured is the sum of all areas of the passages between the vanes
(c) Nozzle
area effects the efficiency of the engine
(d) All
are correct
11. Hydromantic pitch propeller
(a) Is
constant speed counter weight type propeller
(b) As in
A also used for full feathering
(c) As
in B also used for reversing operation
(d) As in
C also used for maneuverable pitch change
12. Oil found in gas path
(a) Inoperative
scavenge pump
(b) Fuel
leak in oil system
(c) Low
vent pressure
(d) None
of the above is correct
13. When water is injected in inlet alone
(a) N1
will move away from stall
(b) N2
will move away from stall
(c) N1
will move towards stall
(d) Both
N1 and N2 will move away from stall
14. Trimming is carried out
(a) To
set idle to max rpm
(b) To
adjust acceleration and deceleration
(c) To
limit exhaust gas temperature
(d) To
set compressor bleed valve opening
15. In centrifugal compressor engine thrust is determined by
(a) RPM
(b) EPR
(c) EGT
(d) TORQUE
16. Increasing NGV area will cause
(a) N1
increase
(b) N1
decrease
(c) TSFC
decrease
(d) N1 no
change
17. For a given compressor rpm if airflow increase
(a) Compression
ratio increases surge margin decreases
(b) Compression
ratio increases surge margin increases
(c) Compression
ratio decreases surge margin increases
(d) Compression
ratio increases surge margin increases
18. If bypass valve is fitted across the metering valve, and
P1 is inlet pressure and P2 is outlet pressure then constant fuel pressure
differential is depends on (Tr.273)
(a) P2
– P2
(b) Orifice
area
(c) Metering
valve
(d) Bypass
valve
Answers: 10 – d, 11 - , d, 12 – a, 13 – a, 14 – a, 15 – a,
16 - , 17 – a, 18 – d.
19. Two internal sections of an engine are subjected to
different air per seel to be used
(a) Thread
seal
(b) Ring
seal
(c) Multi
grooved seal
(d) Carbon
seal
20. The afterburner engine liner is perforated
(a) Which
is cooled by secondary air
(b) Leads
to screech
(c) A
and B are correct
(d) None
of the above
21. In a hydro mechanical torque meter if the temperature of
oil is increased causes
(a) High
torque reading
(b) Low
torque reading
(c) No
change
(d) Any
of the above
22. Most prevalent condition for icing is
(a) High
rpm low airspeed
(b) High
rpm high airspeed
(c) Low
rpm low airspeed
(d) High
rpm high velocity
23. MCS
(a) Electrical
heaters are mostly preferred than pneumatic heating for anti-icing system
(b) Isopropyl
alcohol or phosphate compounds are used for deicing system
(c) Anti
icing heating is commanded through cyclic timers
(d) None
of the above
24. Turbo shaft with free turbine, its speed is controlled
by
(a) Ng
governor
(b) Nf
governor
(c) Idle
governor
(d) Not
controlled by governor
25. The oil system used by VTOL engine is
(a) Full
flow
(b) Hot
tank
(c) Total
loss (expandable)
(d) Pressure
relief valve
26. In full flow oil system quantity of oil flow is
determined by
(a) Take
off
(b) Cruise
(c) Ground
idle
(d) All
rpm range
27. In test house first and last test carried out after
overhaul is
(a) Vibration
survey
(b) Hot
air leak
(c) Engine
power setting
Answers: 19 – c, 20 – a, 21 – b, 22 – b, 23 – d, 24 - , 25 – c, 26 – d, 27 - .
28. Factory ignition depends upon
(a) Volatility
of fuel
(b) Specific
gravity
(c) Viscosity
(d) As in
A atomization
29. MCS
(a) Turbojet
engines used annular combustion for shorter length
(b) Turbojet
engines used reverse flow combustion for shorter length
(c) Turbofan
engines give best performance
(d) B and
C are correct
30. Compression in an axial flow engine is
(a) Isothermal
(b) Adiabatic
(c) Isometric
(d) Isobatic
31. Decreasing nozzle area will cause
(a) Pt7
up*
(b) Pt7
down
(c) Tt7
down
(d) No
change
32. Part time fuel control
(a) Used
for part power trim
(b) Operates
in adverse condition
(c) Operates
like hydro mechanical fcu up to max. Power then amplifier takes care
(d) Operates
like FADEC
33. Last chance filter is used in
(a) Oil
system
(b) Fuel
system
(c) Oil
tank
(d) Deairator
34. If Pt2 is partially blocked by ice formation
(a) EPR
will increase
(b) EPR
will decrease
(c) EPR
will fluatuate
(d) EPR
will not change
35. More than one weld is not carried out in deicing element
because
(a) Increases
circuit resistance of element
(b) Decreases
circuit resistance of element
(c) It
will damage the element
(d) All
the above may happen
36. The function of selector valve is post exit thrust
reverse is
(a) It
gives command for reverse operation
(b) It
selects the actuator valve to operate thrust reverse
(c) T
operates the hydraulic valve to slow and deploy thrust reverse
(d) None
of the above
Answers: 28 – d, 29 – d, 30 – b, 31 – a, 32 – c, 33 – a, 34
– a, 35 - b 36 – c.
37. Most commonly used oil in gas turbine engine is
(a) Petroleum
(b) Akyl
diestar
(c) Polyester
(d) Mineral
38. Mark INCORRECT statement
(a) Screen
type filter is used in low pressure
(b) Cartridge
type filter is used in low pressure
(c) Screen
disk type filter is used in low pressure
(d) Cone
shaped filter element is used in screen type filter
39. In turboprop power lever is interconnected to
(a) Throttle
lever
(b) Propeller
lever
(c) Condition
lever
(d) Governor
40. MCS
(a) For
a given torque weight of starter generator is less than air turbine starter
(b) Starter
generator windings are separate
(c) Duty
cycle of starter generator is more critical than air turbine starter
(d) None
of the above
41. In turboprop during starting the positions of levers are
(a) Throttle
lever at idle and propeller lever at high pitch
(b) Throttle
lever at idle and propeller lever at nay position from high to low pitch
(c) Propeller
lever at idle throttle lever at idle
(d) Throttle
lever at idle and propeller lever at low pitch setting
42. If oil quantity is increased cause is
(a) Scavenge
pump failure
(b) Food
faculty
(c) Bearing
pressure loss
(d) All
of above
43. During starting satisfactory condition for combustion is
(a) Low
pressure, high temp, low velocity
(b) High
pressure, high temp, high velocity
(c) Low
pressure, high temp, high velocity
(d) High
pressure, high temp, low velocity
44. Gradual darkening of oil is due to
(a) Degraded
oil is used
(b) Inhibitor
performing its function properly
(c) Excessive
air leak in to the oil
(d) All
are correct
45. MCS
(a) Oil
bypass valve is installed at inlet
(b) Oil
flow through passages depend on the operation
(c) If
problem occurs fuel will flow into oil
(d) All
are correct
Answers: 37 – c, 38 – c, 39 – b, 40 – b, 41 – d, 42 – b, 43
– d, 44 – b, 45 – c.
46. Thrust of turbofan measured in test cell by
(a) EPR
(b) EPR/NI
(c) Torque
meter
(d) Thrust
meter
47. In post exit thrust reverse is deployed by
(a) Isolator
valve
(b) Selector
valve
(c) Shut
off valve
(d) Shuttle
valve
48. In a constant displacement pump the output volume is 10
gph it actually
(a) Delivery
(b) Displacement
(c) Volumetric
efficiency
(d) All
are correct
49. MCS
(a) The
seal which rides on highly polished surface is carbon seal
(b) Carbon
seals are used in vent pressurization system
(c) Both
A and B are correct
(d) None
of the above is correct
50. In reheat engine with reheat operation
(a) Dry
EGT is high
(b) Dry
EGT is low
(c) No
effect on EGT as it remain same
(d) Wet
EGT is high
51. Safety feature incorporated in air turbine starter
(a) Starter
shaft with shear neck section shears off when over speeded
(b) Starter
turbine gets chocked in case of air inlet valve failure
(c) Any
malfunction occurs magnetic chip detector inspection is carried out
(d) All
are correct
52. Most important property of turbine blades
(a) Corrosion
resistance
(b) Creep
resistance
(c) Vibration
resistance
(d) Fatigue
53. Property required in NGV
(a) Corrosion
resistance
(b) Heat
resistance
(c) Creep
resistance
(d) Fatigue
resistance
54. Prist used in fuel for
(a) Anti-icing
(b) Anti-biocidal
(c) A
and B are correct
(d) Anticorrosive
Answers: 46 – d, 47 – b, 48 – b, 49 – a, 50 – c, 51 – d, 52
– b 53 – b.
55. P & D valve senses
(a) Electrical
signal
(b) Rpm
(c) Inter
stage pump pressure
(d) All
of above
56. Function of NGV
(a) To
increases the pressure at its outlet as per Bernoulli’s theorem
(b) To
deflect the gases at desired angle
(c) As
in B to increase the velocity of gases at its outlet
(d) None
of the above
57. If any fault occurs in FCOC
(a) Oil
will flow into fuel
(b) Fuel
will flow into oil
(c) Fuel
quantity will increase
(d) None
of the above
58. Water methanol is injected at inlet of compressor
(a) Increases
mass airflow through whole engine
(b) Increases
the fuel flow
(c) Both
A and B are correct
(d) None of
the above
59. Output of gear rotor pump
(a) Proportional
to the missing tooth multiplied by no. of teeths on outer gear
60. Breather pressurization system
(a) Keeps
the constant pressure in the sump for positive flow of oil
(b) Ensures
positive flow of oil to the bearing chambers
61. Angle of blades during starting of turboprop
(a) Fine
pitch so that minimum resistance on blades
(b) Coarse
pitch so that minimum resistance on blades
(c) Any
angle so that EGT should not exceed limit
(d) None
of the above