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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, the highest Mach number leading to shock wave in the fluid flow occurs at

Impeller inlet radius
Impeller outlet radius
Diffuser outlet radius
Diffuser inlet radius

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Compressors, Gas Turbines and Jet Engines
The fuel consumption in gas turbines is accounted for by

Higher heating value
Lower heating value
Heating value
Higher calorific value

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Compressors, Gas Turbines and Jet Engines
High air-fuel ratio is used in gas turbines

To save fuel
To reduce the exit temperature
To increase the output
To increase the efficiency

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Compressors, Gas Turbines and Jet Engines
In air breathing jet engine, the jet is formed by expanding

Plasma
Highly heated atmospheric air
Solids
Liquid

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Compressors, Gas Turbines and Jet Engines
The ideal efficiency of simple gas turbine cycle depends on

Minimum cycle temperature
Maximum cycle temperature
All of these
Pressure ratio

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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

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

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