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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a centrifugal compressor, an increase in speed at a given pressure ratio causes

Increase in flow
Decrease in flow
Increase in flow and decrease in efficiency
Increase in efficiency

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Compressors, Gas Turbines and Jet Engines
Rotary compressors are suitable for

Low discharge at high pressure
Large discharge at high pressure
Low discharge at low pressure
Large discharge at low pressure

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Compressors, Gas Turbines and Jet Engines
Aeroplanes employ following type of compressor

None of these
Axial flow
Centrifugal
Radial flow

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Compressors, Gas Turbines and Jet Engines
To avoid moisture troubles, the branch connections from compressed air lines should be taken from

Top side of main
Left side of main
Bottom side of main
Right side of main

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

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

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

Reduce volume of air
Cause moisture and oil vapour to drop out
Cool the air
Remove impurities from air

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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