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1. |
A centrifugal pump is required to lift 0.0125 m3/s of water from a well with depth 30 m. If rating of the pump motor is 5 kW, and the density of water is 1000 kg/m3, the efficiency of the pump will be nearly |
A. | 82% |
B. | 74% |
C. | 66% |
D. | 58% |
Answer» C. 66% | |