1. Internal energy of a gas depends upon its
(a) Pressure
(b) Temperature
(c) Volume
(d) None
of the above
2. When mechanical energy is converted into heat energy or
vice versa an exact equivalent exists between the two. This is stated in the
(a) First
law of thermodynamics
(b) Second
law of thermodynamics
(c) Third
law of thermodynamics
(d) None
of the above
3. During starting an engine stabilizes at idle r.p.m and
JPT
(a) Check
for whether oil pressure is correct
(b) Check
for whether oil temperature is correct
(c) Check
for whether generator output is correct
(d) All
of the above correct
4. Mark the correct statement
(a) Fuel
trimmer is provided so that the relationship between fuels flow an r.p.m. Can
be varied without using fuel lever
(b) Because
the mass flow inside the engine change with atmospheric conditions
(c) Trimmer
is adjusted to provide given JPT.
(d) All
of the above are correct
5. During start engine rotates but fails to light up one
suspect
(a) Ignition
system fault
(b) Fuel
pressure control system fault
(c) Both
a and b
(d) Battery capacity is low
6. During inspection of centrifugal compressor blades
normally
(a) No
crack is allowed in the leading edge trailing edge and blade tips
(b) Negligible
crack is allowed as in (i) up to minimum extend possible and under constant
monitoring
(c) Nicks
dents in the leading edge, trailing edge and blade tips not allowed
(d) None
of the above
7. The lowest r.p.m. at which a rotating object vibrates
(a) Resonance
(b) Natural
frequency of vibration
(c) Harmonics
(d) All
of the above
8. (a) At high power
settings the noise generated from the compressor blade is predominant
(b) Noise from
the compressor is of lower frequency
(c) Low frequency
sounds can be attenuated easily
(d) None of the
above
9. Characteristics of P & D valve
(a) Dump
valve is spring loaded close
(b) Pressurizing
valve is spring loaded open
(c) Pressurizing
valve limits starting fuel to primary manifold
(d) All
of the above
10. In a jet engine V.S.V and variable I.G.V are a part of
(a) High
pressure system
(b) Low
pressure system
(c) Accessory
drive
(d) None
of the above
11. Modular construction in a jet engine
(a) Enables
maintenance with limited repair
(b) Enables
maintenance with major repair
(c) Modular
maintenance involves more of repair rather replacement
(d) Both
b and c
12. Smoke from tail pipe. Most probable cause is
(a) Main
oil filter contaminated
(b) Blocked
scavenge port of bearing housing
(c) Both
a and b
(d) None
of the above
13.In a flight from Delhi to Bangalore , excess oil was
consumed than required most probable cause could be
(a) Defective
centrifugal breather carbon seal
(b) Main
oil filter contamination
(c) Oil
leak from contamination
(d) Both
a and b
14. In the relation P.V X T the term X is proportional
(a) Mass
of the gas molecules
(b) No of
gas molecules
(c) Pressure
volume and temperature
(d) Average
K.E of the molecules
15. If a system is perfectly conducting to the surroundings
and the temp remains constant the process is
(a) Isothermal
(b) Adiabetic
(c) P.V
constant
(d) Both
b and c
16. An aircraft is designed to fly at 350 m.p.h.
(a) Jet
engine becomes the choice
(b) Propeller
(c) By
pass engine
(d) None
of the above
17. An airplane has an engine providing 4000 lb thrust at
300 m.p.h the thrust horsepower is
(a) 4000
b.h.p.
(b) 3200
(c) 12800
(d) 5000
18. Increase in the turbine disc diameter under hot running
(a) Disc
growth
(b) Disc
rock
(c) Has
effect of reducing tip clearance as engine run time increases
(d) All
of the above
19. When change in pressure and volume of a gas take s place
without change in temperature the process
(a) Is
very slow
(b) Obeys
boyle’s law
(c) Adiabatic
change is quick
(d) All
of the above
20. Oil pressure continuously fluctuates
(a) Indicates
is faulty
(b) Pressure
relief valve is sicking and contaminated
(c) Both
a and b
(d) Oil
check valve setting is improper
21. After flight is over engine does not shut down
(a) Loose
connection of power lever linkage
(b) Fuel
control shut off valve is faulty
(c) Power
lever rigging is improper
(d) All
of the above
22. After engine starts the engine hesitates for 5-6 seconds
go for
(a)
Surge bleed valve check
(b)
Solenoid controller check
(c)
Fuel pump functional check
(d)
All of the above
23. During testing of engine, hooting/ humming sound is
heard
(a) Operation
of compressor bleed valve is improper
(b) Condition
of the bleed valve diaphragm is bad
(c) Both
a and b
24. For M.E.C and P.M.C
(a) M.E.C
provides an electronic override of P.M.C to set corrected fan speed
(b) P.M.C
provides an electronic override of M.E.C to set corrected fan speed
(c) P.M.C
is located in the tail of the engine
(d) None
of the above
25. Start valve can be operated
(a) Manually
(b) Electrically
(c) Opening
/closing is indicated by pneumatic pressure
(d) All
of the above
26. In engine starter system
(a) Compressed
air pressure is converted to rotational mechanical energy
(b) Reduction
mechanism of gear train converts low speed high torque of turbine wheel into
high specific low require through a pawl and ratchet mechanism
(c) Starter
operation is not controlled by start valve
(d) None
of the above
ANSWERS
1 B 11 A 21 B
2 A 12 B 22 ?
3 D 13 D 23 ?
4 A 14 C 24 B
5 ? 15 B 25 ?
6 A 16 B 26 ?
7 B 17 B
8 A 18 B
9 C 9 B
10 A 20 B
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