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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
Cylinder clearance in a compressor should be

About 50% of swept volume
As small as possible
About 100% of swept volume
As large as possible

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Compressors, Gas Turbines and Jet Engines
The ratio of isentropic work to Euler work is known as

Work coefficient
Slip factor
Pressure coefficient
Polytropic reaction

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Compressors, Gas Turbines and Jet Engines
The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

0.1%
0.5%
5%
1.0%

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Compressors, Gas Turbines and Jet Engines
Inter-cooling in multistage compressors is done

To cool the air during compression
To enable compression in two stages
To minimize the work of compression
To cool the air at delivery

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Compressors, Gas Turbines and Jet Engines
The weight per horse power ratio for gas in Turbine as compared to I.C. engine and steam turbine is

Lower
Higher
Same
None of these

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Compressors, Gas Turbines and Jet Engines
Water is injected in gas turbine cycle to

Control fire hazards
Control output of turbine
Increase efficiency
Control temperature

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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