Test of Centrifugal Pump and Mechanical-Energy Balance

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Test of Centrifugal Pump and Mechanical-Energy Balance. A centrifugal pump is being tested for performance, and during the test the pressure reading in the 0.305-m-diamater suction line just adjacent to the pump casing is -20.7kPa (vacuum below atmospheric pressure). In the discharge line with a diameter of 0.254m at a point 2.53m above the suction line, the pressure is 289.6kPa gage. The flow of water from the pump is measured as 0.1133 m3/s. (The density can be assumed as 1000kg/m3.) Calculate the kW input of the pump.