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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The criterion of the thermodynamic efficiency for rotary compressor is

Isothermal compression
None of the listed here
Polytropic compression
Isentropic compression

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

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

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Compressors, Gas Turbines and Jet Engines
Euler's equation can be used for

All of these
Pumps
Radial flow compressors
Axial flow compressors

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Compressors, Gas Turbines and Jet Engines
A rotary compressor is driven by an

Electric motor
Either (A) or (B)
Engine
None of these

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

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

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of a compressor decreases with ________ in compression ratio.

Remain same
Decrease
Increase
Does not change

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