The effi ciency of a pump is defi ned as the (dimensionless) ratio of the power
Chapter 1, Problem p1.13(choose chapter or problem)
The effi ciency of a pump is defi ned as the (dimensionless) ratio of the power developed by the fl ow to the power required to drive the pump: 5 Qp input power where Q is the volume rate of fl ow and Dp is the pressure rise produced by the pump. Suppose that a certain pump develops a pressure rise of 35 lbf/in 2 when its fl ow rate is 40 L/s. If the input power is 16 hp, what is the effi ciency?
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