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Question

Water falls from a height of 80 m at the rate of 20 kg/s to operate a turbine. The losses due to frictional force are 20 % of the energy. How much power is generated by the turbine? (g=10 ms2)

A
10.2 kW
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B
12.8 kW
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C
12.3 kW
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D
7.0 kW
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