In a single casing, multistage pump running at constant speed, the cap – McqOptions

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1.	In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by
A.	designing new impeller
B.	trimming the impeller size to the required size by machining
C.	not possible
D.	some other alterations in the impeller
Answer» C. not possible

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