Q
In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by_______________?
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A
A. Designing new impeller
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B
B. Trimming the impeller size to the required size by machining
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C
C. Not possible
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D
D. Some other alterations in the impeller
Correct Answer:
B. B. Trimming the impeller size to the required size by machining
