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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be

Radial
Backward curved
Forward curved
None of the listed here

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Compressors, Gas Turbines and Jet Engines
The degree of reaction is usually kept ________ for all types of axial flow compressors.

0.2
0.3
0.4
0.5

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

Does not change
Increase
Remain same
Decrease

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Compressors, Gas Turbines and Jet Engines
More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than

6 kg/cm²
14.7 kg/cm²
10 kg/cm²
2 kg/cm²

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Compressors, Gas Turbines and Jet Engines
In axial flow compressor, exit flow angle deviation from the blade angle is a function of

Blade camber and incidence angle
Blade camber and space-chord ratio
Space-chord ratio
Blade camber

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Compressors, Gas Turbines and Jet Engines
The type of rotary compressor used in aeroplanes, is of

Axial flow type
Centrifugal type
None of these
Radial flow type

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