Question

A pump lifts water from 20m depth and deliver at rate of 20kg/s with a velocity 5root2 m/s. Power of the pump is options

Answer 1

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Answer 2

Answer: 4.5 kW

Explanation: For a time period of 1 sec,

Power= Work done

P= mgh + ½mv²

P= 20.10.20 + ½.20.50

P= 4000 + 500

P= 4500 W

P= 4.5 kW