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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a high pressure compressor, the delivery pressure is

1 to 5 bar
5 to 8 bar
10 to 15 bar
8 to 10 bar

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Compressors, Gas Turbines and Jet Engines
Atmospheric pressure is 1.03 kg/cm and vapour pressure is 0.03 kg/cm. The air pressure will be

1.06 kg/cm²
1.03 kg/cm²
0.53 kg/cm²
1.00 kg/cm²

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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.

None of these
Higher
Lower
Same

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Compressors, Gas Turbines and Jet Engines
A rocket works with maximum overall efficiency when air craft velocity is equal to the

Jet velocity
Average of the jet velocity
Twice the jet velocity
Half the jet velocity

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Compressors, Gas Turbines and Jet Engines
The air entry velocity m a rocket as compared to aircraft is

More
Zero
Same
Less

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Compressors, Gas Turbines and Jet Engines
Which is false statement about advantages of multistage compressor in comparison to single stage compressor?

Better mechanical balance
Less loss of air due to leakage past the cylinder
Less power requirement
Lower volumetric efficiency

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