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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The inlet pressure is always ___ the discharge pressure.

More than
None of the listed here
Equal to
Less than

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Compressors, Gas Turbines and Jet Engines
The ratio of the indicated power to the shaft power or brake power of the motor or engine required to drive the compressor, is called

Mechanical efficiency
Volumetric efficiency
Compressor efficiency
Isothermal efficiency

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Compressors, Gas Turbines and Jet Engines
Reheating in a multistage expansion gas turbine ________ compressor work.

Decreases
None of these
Has no effect on
Increases

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Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

Low frontal area
High pressure rise
Higher thrust
None of the listed here

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Compressors, Gas Turbines and Jet Engines
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

Both (A) and (B)
None of these
Efficiency of the engine
Thrust and range of aircraft

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Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Isothermally
Adiabatically
Isochronically
Isentropically

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