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Please show all steps. A pump is used to transport oil with density 890kg/m3. The upstream and downstream pressures are 100kPa and 300kPa respectively. If

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Please show all steps. A pump is used to transport oil with density 890kg/m3. The upstream and downstream pressures are 100kPa and 300kPa respectively. If a flow rate of 50L/s is to be delivered, then what is the mechanical efficiency of the pump if it draws 13kW of power? answer is 76.9%

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