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Compressors, Gas Turbines and Jet Engines

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

Decrease of work ratio
Decrease of thermal efficiency
Increase of work ratio
Both (A) and (B) above

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Compressors, Gas Turbines and Jet Engines
The advantage of multistage compression over single stage compression is

All of these
Lower power consumption per unit of air delivered
Decreased discharge temperature
Higher volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
Euler's equation can be used for

Pumps
All of these
Axial flow compressors
Radial flow compressors

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 5°C increase in atmospheric temperature

0.001
0.005
0.05
0.01

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

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

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

0.3
0.4
0.5
0.2

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