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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
For supplying intermittent small quantity of air at high pressure, following compressor is best suited

Axial
Centrifugal
Screw
Reciprocating

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Compressors, Gas Turbines and Jet Engines
The performance of air compressor at high altitudes will be ________ as compared to that at sea level.

Same
Lower
None of these
Higher

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Compressors, Gas Turbines and Jet Engines
The ratio of the discharge pressure to the inlet pressure of air is called

Expansion ratio
Compressor efficiency
Compression ratio
Volumetric efficiency

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Compressors, Gas Turbines and Jet Engines
The hottest point in a gas turbine is

in the center
at the tip
between ~ to i of the blade height
at the base

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Compressors, Gas Turbines and Jet Engines
The compressor performance at higher altitude compared to sea level will be

Higher
Dependent on other factors
Same
Lower

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Compressors, Gas Turbines and Jet Engines
The maximum delivery pressure in a rotary air compressor is

10 bar
30 bar
50 bar
20 bar

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