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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
Frictional power
None of these
Indicated power

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated H.P. and brake H.P. is known as

Isothermal efficiency
Volumetric efficiency
Mechanical efficiency
Adiabatic efficiency

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

More than
Equal to
None of the listed here
Less than

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Compressors, Gas Turbines and Jet Engines
After-cooler is used to

Decrease the delivery temperature for ease in handling
Cool the air
Cause moisture and oil vapour to drop out
Reduce volume

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Compressors, Gas Turbines and Jet Engines
The closed cycle in gas turbines

In never used
Is used when gas is to be burnt
Provides greater flexibility
Provides lesser flexibility

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Compressors, Gas Turbines and Jet Engines
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as

Slip factor
Work factor
Degree of reaction
Pressure coefficient

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