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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A compressor at high altitudes will require ___ power.

More
None of the listed here
Less
Same

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Compressors, Gas Turbines and Jet Engines
A centrifugal compressor works on the principle of

Generating pressure directly
Centripetal action
Conversion of kinetic energy into pressure energy
Conversion of pressure energy into kinetic energy

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Compressors, Gas Turbines and Jet Engines
The compression ratio in a gas turbine is of the order of

0.20902777777778
0.33402777777778
0.50069444444444
3.5 : 1

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Compressors, Gas Turbines and Jet Engines
Propulsion efficiency of the following order is obtained in practice

0.72
0.5
0.6
0.34

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Compressors, Gas Turbines and Jet Engines
Euler's equation is applicable for

All of these
Centrifugal compressor
Axial compressor
Pumps

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Compressors, Gas Turbines and Jet Engines
During base load operation, the best method of controlling compressor is

Start-stop motor
Relief valve
Constant speed unloader
Variable speed

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