Erosion and pits formation on the impeller of a centrifugal pump may b

1.	Erosion and pits formation on the impeller of a centrifugal pump may be due to
A.	cavitation.
B.	low speed of impeller.
C.	its operation with delivery valve closed for considerable time after starting the pump.
D.	off centering of pump with motor.
Answer» B. low speed of impeller.

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Erosion and pits formation on the impeller of a centrifugal pump may be due to

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