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Compressors - Interview Questions and Answers

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111. Axial flow compressor resembles
A. centrifugal pump
B. reciprocating pump
C. turbine
D. sliding vane compressor
E. none of the above.
Explanation:
112. The pressure ratio in gas turbines is of the order of
A. ,2:l
B. 4:1
C. 61: 1
D. 9 : 1
E. 12:1.
Explanation:
113. The thermal efficiency of a gas turbine as compared to a diesel plant is
A. same
B. more
C. less
D. depends on other factors
E. unpredictably.
Explanation:
114. The work ratio of simple gas turbine cycle depends on
A. pressure ratio
B. maximum cycle temperature
C. minimum cycle temperature
D. all of the above
E. none of die above.
Explanation:
115. Pick up the wrong statement
A. centrifugal compressors deliver prac-tically constant pressure over a con-> siderable range of capacities
B. Axial flow compressors have a sub-stantially constant delivery at variable pressures
C. centrifugal compressors have a wider stable operating range than axial flow compressors
D. axial flow compressors are bigger in diameter compared to centrifugal type
E. axial flow compressors apt to be longer as compared to centrifugal type.
Explanation:
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