Compressors, Gas Turbines And Jet Engines MCQ Questions & Answers | Mechanical Engineering

A. The ratio of the discharge pressure to the inlet pressure of air is called compressor efficiency

B. The compression ratio for the compressor is always greater than unity

C. The compressor capacity is the ratio of work-done per cycle to the stroke volume

D. During isothermal compression of air, the work-done in a compressor is maximum

A. The reciprocating compressors are best suited for high pressure and low volume capacity

B. The effect of clearance volume on power consumption is negligible for the same volume of discharge

C. Both (A) and (B)

D. None of these

A. There is no pressure drop in the inter-cooler

B. The compression in both the cylinders is polytropic

C. The suction and delivery of air takes place at constant pressure

D. All of the above

A. Equal to

B. Less than

C. More than

D. None of these

A. Forward curved

B. Backward curved

C. Radial

D. None of these

A. Increase

B. Decrease

C. Remain same

D. May increase or decrease depending on clearance volume

A. Isothermal compression

B. Adiabatic compression

C. Isentropic compression

D. Polytropic compression

A. Compressor capacity

B. Compression ratio

C. Compressor efficiency

D. Mean effective pressure

A. In the diffuser only

B. In the impeller only

C. In the diffuser and impeller

D. In the inlet guide vanes only

A. Increase first at fast rate and then slow

B. Increase first at slow rate and then fast

C. Decrease continuously

D. First increase, reach maximum and then decrease