1
Question
An
engine pumps up 100 kg water through a height of 10 m in 5s. Given that the
efficiency of the engine is 60%. If g = 10 m/s2, then the power of
the engine is
An engine pumps up 100 kg water through a height of 10 m in 5s. Given that the efficiency of the engine is 60%. If g = 10 m/s2, then the power of the engine is
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Solution
The correct option is A 3.3
kW
Total work done = 100*10*10 = 10000 J
(60/100)* Actual work = 10000
Actual work = 105/6 = 100/6 kJ
Time = 5s
Total Power =
20/6 = 10/3 kW
3.3 kW
Total work done = 100*10*10 = 10000 J
(60/100)* Actual work = 10000
Actual work = 105/6 = 100/6 kJ
Time = 5s
Total Power = 20/6 = 10/3 kW
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