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 ....... $kW$ $(g = 10\,m/s^2)$
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Generated power
$=\left(\frac{\mathrm{mgh}}{\mathrm{t}}\right) \times \frac{90}{100}=(15 \times 60 \times 10) \times \frac{90}{100}=8.1 \mathrm{kW}$
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