Question

An engine pumps up `100 kg` water through a height of `10 m` in `5 s`. If efficiency of the engine is `60%`. What is the power of the engine? `Take g = 10 ms^(2)`.
A. (a) `33kW`
B. (b) `3.3kW`
C. (c) `0.33kW`
D. (d) `0.033kW`

Answer 1

Correct Answer - B
Power used to pump the water`=(mgh)/(t)=(100xx10xx10)/(5)`
Power of engine`=2000xx100/60=3.3kW`