• # question_answer 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? $(g=10\,m/{{s}^{2}})$ A)  8.1 kW       B)  10.2 kWC)  12.3 kW     D)  7.0 kW

Power generated by the turbine is, ${{P}_{generated}}={{P}_{input}}\times \frac{90}{100}$ $=\frac{Mgh}{t}\times \frac{90}{100}$ Putting the given values                           $\frac{M}{t}=15\,kg/s,\,g=10\,m/{{s}^{2}},h=60\,m$ ${{P}_{generated}}=(15\times 10\times 60)\times \frac{90}{100}$