NEET Sample Paper NEET Sample Test Paper-39

  • question_answer 11) 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 kW

    C)  12.3 kW     

    D)  7.0 kW

    Correct Answer: A

    Solution :

     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                           \[\frac{M}{t}=15\,kg/s,\,g=10\,m/{{s}^{2}},h=60\,m\] \[{{P}_{generated}}=(15\times 10\times 60)\times \frac{90}{100}\]

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