Compressors - Interview Questions | Exam2Win

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96. The volumetric efficiency of compressor with increase in compression ratio will

A. increase

B. decrease

C. remain same

D. may increase/decrease depending on clearance volume

E. none of the above.

Explanation:

97. Open cycle gas turbine works on

A. Brayton or Atkinson cycle

B. ankine cycle

C. Carnot cycle

D. Erricsson cycle

E. Joule cycle.

Explanation:

98. An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes

A. one adiabatic, two isobaric, and one constant volume

B. two adiabatic and two isobaric

C. two adiabatic, one isobaric and one constant volume,

D. one adiabatic, one isobaric and two constant volume

E. two isobaric, two adiabatic and one constant volume.

Explanation:

99. Stalling of blades in axial flow compressor is the phenomenon of

A. air stream blocking the passage

B. motion of air at sonic velocity

C. unsteady periodic and reversed flow

D. air stream not able to follow the blade contour

E. production of no air pressure.

Explanation:

100. Atmospheric pressure is 1.03 kg/cm and vapor pressure is 0.03 kg/cm . The air pressure will be

A. 1.03 kg/cm2

B. 1.06 kg/cm2

C. 1.00 kg/cm2

D. 0.53 kg/cm2

E. 0.5 kg/cm2.

Explanation: