A variable-speed centrifugal pump is running with its drive motor at 1,800 rpm ___

A variable-speed centrifugal pump is running with its drive motor at 1,800 rpm.

The initial flow rate is 1,000 gpm, total head is 100 feet, and work input is 500 hp.

If the flow rate is changed to 1,200 gpm, which one of the following will be the correct value for new work input?

A. 550 hp
B. 778 hp
C. 864 hp
D. 912 hp

Show Answer

Answer: C

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