An engine pumps up `100 kg` water through a height of `10 m` in `5 s`. If effcienecy of the engine is `60%`. What is the power of the engine? `Take g = 10 ms^(2)`.

Options

A. `33 kW`
B. `3.3 kW`
C. `0.33 kW`
D. `0.033 kW`

Answer

B

Explanation

Power used to pump the water:
`(mgh)/(t) = 100 xx 10 xx (10)/(5) = 2,000W`
Power of engine `= 2000 xx (100)/(60) = 3.3 kW`