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Questions  

Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional forces are 10% of energy. How much power is generated by the turbine? (g = 10 m/s2)

a
12.3 kw
b
7.0 kw
c
8.1 kw
d
10.2 kw

detailed solution

Correct option is C

Generated power =mght(0.9)=(15×60×10)(0.9)= 8.1 x 103 w = 8.1 kw

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