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
E. none of the above

Correct Answer: trimming the impeller size to the required size by machining ✔

Last Updated: January 24, 2019