An engine pumps up 100 kg of water through a height of 10 m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine?

Q: An engine pumps up 100 kg of water through a height of 10 m in 5s. Given that the efficiency of the engine is 60%, what is the power of the engine? Take g = 10 ms–2

(a) 33 kW

(b) 3.3 kW

(c) 0.33 kW

(d) 0.033 kW

Ans: (b)