An installation consists of an electric motor which drives a water pump to lift 75 L of water per second to a height of 5 m, where water is disbursed at negligible speed. If the motor consumes a power of 5 kW, then what is the efficiency (%) of the installation? [g = 10 m s -2 ]
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(75)
Power consumed by the motor
P motor = 5000 W
Power used in lifting the water
The efficiency of the motor is
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