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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A compressor mostly used for supercharging of I.C. engines is

Radial flow compressor
Reciprocating compressor
Roots blower
Axial flow compressor

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Compressors, Gas Turbines and Jet Engines
Gas turbine cycle with regenerator

Allows high compression ratio
Decreases heat loss is exhaust
Allows operation at very high altitudes
Increases thermal efficiency

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Compressors, Gas Turbines and Jet Engines
Losses in a centrifugal compressor are due to

All of the listed here
Impeller channel losses
Diffuser losses
Inlet losses

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Compressors, Gas Turbines and Jet Engines
In gas turbines, high thermal efficiency is obtained in

Closed/open depending on other considerations
Closed cycle & Open cycle
Closed cycle
Open cycle

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Compressors, Gas Turbines and Jet Engines
In a single stage, single acting reciprocating air compressor, without clearance, the work-done on the air during isentropic compression is ________ the heat required to raise the temperature of air from T₁ to T₂ at a constant pressure.

Equal to
None of these
Less than
Greater than

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Compressors, Gas Turbines and Jet Engines
A rocket works with maximum overall efficiency when air craft velocity is equal to the

Half the jet velocity
Average of the jet velocity
Twice the jet velocity
Jet velocity

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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