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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The air power of the compressor is also known as

Brake power
Indicated power
Frictional power
None of these

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

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

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

Liquid
Solids
Highly heated atmospheric air
Plasma

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Compressors, Gas Turbines and Jet Engines
Mining industry usually employs following motive power

Petrol engine
Compressed air
C. electric motor
Diesel engine

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Compressors, Gas Turbines and Jet Engines
Propulsion efficiency of the following order is obtained in practice

0.5
0.34
0.6
0.72

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are suitable for

Large discharge at low pressure
Large discharge at high pressure
Low discharge at low pressure
Low discharge at high pressure

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