Module 14 Set-1

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#1. The basic gas turbine engine cycle is

a) induction, compression, combustion, expansion, exhaust

b) induction, compression, expansion, combustion, exhaust

c) compression, combustion, induction, expansion, exhaust

#2. To measure oil temperature, which of the following would most likely be used?

a) Resistance temperature measurement

b) Thermocouple measurement

c) Optical pyrometer

#3. On a twin spool engine, the HP compressor is driven by

a) ram air over the compressor

b) early stages of the turbine

c) later stages of the turbine

#4. A modular constructed gas turbine engine means that

a) its major assemblies can be removed and replaced

b) all engines have a specific component layout

c) the engine is constructed by the vertical assembly technique

#5. . Modern oil pressure servo transmitters sense

a) differential pressure

b) absolute pressure

c) HP oil pressure

#6. Ratiometer pointer movement is achieved by

a) one coil providing a torque against a permanent magnet

b) two opposing coils providing a torque in a varying magnetic field

c) two opposing coils providing a torque in a permanent magnetic field

#7. An increase in fuel flow through the impeller type fuel flow transmitter is measured by

a) drum lags impeller

b) impeller lags turbine

c) decreasing angle between the two

#9. How does a boost gauge compensate for altitude changes?

a) Spring sealed bellows

b) Two bellows against atmospheric pressure

c) There is no compensation

#10. Where is EGT measured?

a) In the combustion chamber

b) Downstream of the combustion chamber

c) Upstream of the combustion chamber

#11. The EEC is powered and able to operate via

a) only a dedicated alternators

b) the aircraft electrical system

c) The EEC is capable of being powered by both independently depending on conditions

#12. Manifold pressure is measured

a) at inlet port above and below ambient conditions

b) at inlet port above and below standard atmosphere at sea level

c) at inlet port indicating boost pressure

#13. . The principle of operation of a DC ratio meter is

a) one coil moving in a uniform magnetic field

b) two coils moving in a uniform magnetic field

c) two coils moving in a non-uniform magnetic field

#14. E.G.T. thermocouples are usually made of

a) nickel and platinum

b) chromel and platinum

c) chromel and alumel

#17. The majority of power in a free turbine engine is used to

a) drive the gas generator

b) drive the free turbine

c) expel gases through the exhaust

#18. In a FADEC engine with a hydro mechanical fuel system, how is fuel flow controlled?

a) By fuel pressure

b) By electro-hydraulic servo valves (EHSVs)

c) By oil hydraulics

#19. Propeller speed is measured from

a) a slip ring pulse probe

b) a tachometer on the LP turbine shaft

c) a pulse probe at the engine side of the reduction gear

#20. How is fuel flow varied in a variable displacement pressure type pump?

a) Alter the cam plate angle

b) Remote servo pressure

c) Direct cable to cam plate