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mechanical engineering hydraulic machines
1. The specific speed of a centrifugal pump, delivering 750 litres of water per second against a head of 15 metres at 725 r.p.m., is
(A): 24.8 r.p.m.
(B): 248 r.p.m
(C): 48.2 r.p.m
(D): 82.4 r.p.m.
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