While starting a centrifugal pump, its delivery valve should be kept

1.	While starting a centrifugal pump, its delivery valve should be kept
A.	opened.
B.	closed.
C.	either opened or closed ; it does not make any difference.
D.	either opened or closed; depending on the fluid viscosity.
Answer» C. either opened or closed ; it does not make any difference.

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While starting a centrifugal pump, its delivery valve should be kept

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