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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.

Higher
None of these
Same
Lower

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Compressors, Gas Turbines and Jet Engines
Rotary compressor is best suited for

Small quantity of air at low pressure
Large quantity of air at high pressure
Small quantity of air at high pressure
Large quantity of air at low pressure

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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
Same
Higher
None of these

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Compressors, Gas Turbines and Jet Engines
The maximum compression ratio in an actual single stage axial flow compressor is of the order of

0.00070833333333333
0.043055555555556
0.048611111111111
0.045138888888889

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Compressors, Gas Turbines and Jet Engines
The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

Work ratio
Compression ratio
None of these
Pressure ratio

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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

0.05
0.005
0.001
0.01

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