Questions
An electric pump is used to fill an overhead tank of capacity 9 m3 kept at a height 10 m above ground. If the pump takes 5 minutes to fill the tank by consuming 10 kW power, efficiency of the pump should be : (take g = l0 m/s2)
detailed solution
Correct option is D
Efficiency = Output Input ×100=(9×1000)(10)(10)5×6010×103×100=30%Talk to our academic expert!
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Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. It losses 10% of energy due to frictional forces . How much power is generated by the turbine?
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