Question:-
Consider the following statements : In centrifugal compressors, there is a tendency of increasing surge when
1. the number of diffuser vanes is less than the number of impeller vanes
2. the number of diffuser vanes is greater than the number of impeller vanes
3. the number of diffuser vanes is equal to the number of impeller vanes
4. mass flow is greatly in excess of that corresponding to the design mass flow
Which of these statements is/are correct?
Option (A)
1 and 4
Option (B)
2 alone
Option(C)
3 and 4
Option(D)
2 and 4
Correct Option:
(B)
Question Solution:
In centrifugal compressor, for increasing the surge when mass flow rate is less than the design mass flow rate and the number of diffuser vanes is greater than the number of impeller vanes.
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