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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The ratio of work done per cycle to the swept volume in case of compressor is called

Compressor efficiency
Compression ratio
Mean effective pressure
Compression index

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Compressors, Gas Turbines and Jet Engines
Rotary compressor is best suited for

Small quantity of air at high pressure
Large quantity of air at low pressure
Small quantity of air at low pressure
Large quantity of air at high pressure

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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
Lower volumetric efficiency
Less power requirement

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Compressors, Gas Turbines and Jet Engines
If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by

1 - k + k (p₁/p₂)1/n
1 + k - k (p₂/p₁)1/n
1 - k + k (p₁/p₂) n- 1/n
1 + k - k (p₂/p₁) n-1/n

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Compressors, Gas Turbines and Jet Engines
Cylinder clearance in a compressor should be

About 100% of swept volume
As small as possible
About 50% of swept volume
As large as possible

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Compressors, Gas Turbines and Jet Engines
Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on

Stagnation pressure at the outlet
Pressure ratio
Mass flow rate
Change in load

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MORE MCQ ON Compressors, Gas Turbines and Jet Engines

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