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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A large clearance volume in a reciprocating compressor results in

Increased volume flow rate
Reduced volume flow rate
Lower suction pressure
Lower delivery pressure

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

Higher heating value
Higher calorific value
Heating value
Lower heating value

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Compressors, Gas Turbines and Jet Engines
The efficiency of roots blower ________ with the increase in pressure ratio.

None of these
Does not change
Decreases
Increases

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor decreases with ________ in compression ratio.

Does not change
Remain same
Decrease
Increase

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Compressors, Gas Turbines and Jet Engines
The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

Velocity coefficient
Slip factor
None of these
Velocity factor

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Compressors, Gas Turbines and Jet Engines
Inter cooling in compressors

Is the standard practice for big compressors
Cools the delivered air
Results in saving of power in compressing a given volume to given pressure
Enables compression in two stages

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