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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The most efficient method of compressing air is to compress it

Adiabatically
Isothermally
Isentropically
Isochronically

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Compressors, Gas Turbines and Jet Engines
1 m of air at atmospheric condition weighs approximately

1.3 kg
1.0 kg
2.2 kg
0.5 kg

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Compressors, Gas Turbines and Jet Engines
The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called

None of these
Velocity factor
Slip factor
Velocity coefficient

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Compressors, Gas Turbines and Jet Engines
In a four stage compressor, if the pressure at the first and third stage is 1 bar and 16 bar, then the delivery pressure at the fourth stage will be

16 bar
1 bar
256 bar
64 bar

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Compressors, Gas Turbines and Jet Engines
The capacity of a compressor is expressed in

m³/min
m³/kg
kg/m³
kg/m²

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency of air compressors is of the order of

60 - 70%
40 - 50%
70 - 90%
20 - 30%

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