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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The compression ratio for the compressor is always _________ unity.

Less than
None of these
More than
Equal to

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Compressors, Gas Turbines and Jet Engines
As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio

First increases and then decreases
Increases
Remain same
Decreases

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

Decreases the thermal efficiency
Increases the thermal efficiency
Increases the turbine work
Increases the compressor work

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Compressors, Gas Turbines and Jet Engines
The ratio of work-done per cycle to the stroke volume of the compressor is known as

Compression ratio
Compressor capacity
Compressor efficiency
Mean effective pressure

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Compressors, Gas Turbines and Jet Engines
A compressor at high altitudes will require ___ power.

None of the listed here
Same
More
Less

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Compressors, Gas Turbines and Jet Engines
After-cooler is used to

Cool the air
Reduce volume
Cause moisture and oil vapour to drop out
Decrease the delivery temperature for ease in handling

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