The amount of energy consumed by a 10hp water pump in 30 minutes to lift the water to overhead tank is :
A
26.856×106J
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B
0.8949×106J
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C
53.712×106J
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D
13.428×106J
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Solution
The correct option is D13.428×106J We know that, Energy=Power×time and Power, P=Workdone/EnergyTime Therefore energy consumed by 10hp water pump in 30 minutes =power×time=10×746×30×60J 1hp=746W,1min=60sec =13.428×106J