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NEET AIPMT SOLVED PAPER SCREENING 2008

  • 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 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 \[\frac{M}{t}=15kg/s,g=10m/{{s}^{2}},h=60m\] \[{{P}_{generated}}=(15\times 10\times 60)\times \frac{90}{100}\] \[=8.1kW\]


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