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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
A rotary compressor is driven by an

Electric motor
Engine
None of these
Either (A) or (B)

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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?

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

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Compressors, Gas Turbines and Jet Engines
In a jet engine, the air-fuel ratio is

1.2506944444444
2.5006944444444
1.6673611111111
2.0840277777778

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

All of these
Axial compressor
Pumps
Centrifugal compressor

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Compressors, Gas Turbines and Jet Engines
For slow speed large capacity compressor, following type of valve will be best suited

Mechanical valve of the Corliss, sleeve, rotary or semi rotary type
Any of the above
Poppet valve
Disc or feather type

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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
2 kg/cm²
10 kg/cm²
14.7 kg/cm²

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