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Chapter 13, Problem 5P
To determine

Plot the efficiency curve.

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A centrifugal pump is driven by a motor. The performance of the pump reveals the following information:Power input to the pump by the motor (kW):0.5, 0.7, 0.9, 1.0, 1.2Power input to the fluid by the pump (kW):0.3, 0.55, 0.7, 0.9, 1.0Plot the efficiency curve. The efficiency of a pump is a function of the flow rate. Assume that the flow-rate readings corresponding to power data points are equally spaced.
The setup shown in the figure is being used to measure the energy loss across a valve. The velocity of flow of the oil is 1.2 m/s. Calculate the value of K if the energy loss is expressed as K (v 2 / 2g). 1.0 m Oil (sg = 0.90) Flow 380 mm Mercury (sg = 13.54)
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