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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The net work input required for compressor with increase in clearance volume

Decreases
Increases/decreases depending on compressor capacity
Remains same
Increases

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Compressors, Gas Turbines and Jet Engines
The degree of reaction is usually kept ________ for all types of axial flow compressors.

0.2
0.3
0.5
0.4

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Compressors, Gas Turbines and Jet Engines
Reheating in multistage expansion gas turbine results in

Reduction in compressor work
High thermal efficiency
Maximum work output
Decrease of heat loss in exhaust

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Compressors, Gas Turbines and Jet Engines
Maximum work is done in compressing air when the compression is

Isothermal
None of these
Adiabatic
Polytropic

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Compressors, Gas Turbines and Jet Engines
The ratio of work done per cycle to the swept volume in case of compressor is called

Mean effective pressure
Compression ratio
Compression index
Compressor efficiency

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Compressors, Gas Turbines and Jet Engines
In a single acting reciprocating air compressor, without clearance, the compression of air may be

Polytropic
Any one of these
Isothermal
Isentropic

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