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mechanical engineering hydraulic machines
1. Overall efficiency of a centrifugal pump is the ratio of
(A): actual workdone by the pump to the energy supplied to the pump by the prime mover
(B): energy available at the impeller to the energy supplied to the pump by the prime mover
(C): energy supplied to the pump to the energy available at the impeller
(D): manometric head to the energy supplied by the impeller per kN of water
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