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Compressors - Interview Questions and Answers

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91. A centrifugal compressor works on the principle of
A. conversion of pressure energy into kinetic energy
B. conversion of kinetic energy into pres�sure energy
C. centripetal action
D. generating pressure directly
E. combination of (a) and (d).
Explanation:
92. The fuel consumption in gas turbines is accounted for by
A. low.er heating value
B. higher heating value
C. heating value
D. higher calorific value
E. highest calorific value.
Explanation:
93. Gas turbines for power generation are normally used
A. to supply base load requirements
B. to supply peak load requirements
C. to enable start thermal power plant
D. in emergency
E. when other sources of power fail.
Explanation:
94. Mechanical efficiency of gas turbines as compared to I.C engines is
A. higher
B. lower
C. same
D. depends on osier considerations
E. unpredictable.
Explanation:
95. Axial flow compressor has the following advantage over centrifugal compressor
A. larger air handling ability per unit frontal area
B. higher pressure ratio per stage
C. aerofoil blades are used
D. higher average velocities
E. none of the above.
Explanation:
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