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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
An air compressor may be controlled by

Clearance control
Blow off control
Any one of the above
Throttle control

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Compressors, Gas Turbines and Jet Engines
During peak load periods, the best method of controlling compressors is

Constant speed unloader
Start-stop motor
Relief valve
Variable speed

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Compressors, Gas Turbines and Jet Engines
The axial flow compressor is preferred in aircraft gas turbines because of

None of the listed here
Low frontal area
High pressure rise
Higher thrust

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Compressors, Gas Turbines and Jet Engines
Gas turbines use following type of air compressor

Axial flow type
Lobe type
Centrifugal type
Reciprocating type

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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
Aeroplanes employ following type of compressor

Centrifugal
None of these
Radial flow
Axial flow

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