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COMPRESSORS, GAS TURBINES AND JET ENGINES

Compressors, Gas Turbines and Jet Engines
For minimum work required to compress and deliver a quantity of air by multistage compression

The intercooling should be perfect
All of the listed here
The compression ratio in each stage should be same
The work-done in each stage should be same

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Compressors, Gas Turbines and Jet Engines
Which is false statement about advantages of multistage compressor in comparison to single stage compressor?

Better mechanical balance
Less power requirement
Lower volumetric efficiency
Less loss of air due to leakage past the cylinder

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Compressors, Gas Turbines and Jet Engines
In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as

Pressure coefficient
Work factor
Degree of reaction
Slip factor

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Compressors, Gas Turbines and Jet Engines
The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

Volumetric efficiency
Isothermal efficiency
Mechanical efficiency
Compressor efficiency

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

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