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JEE Main & Advanced Sample Paper JEE Main Sample Paper-44

  • question_answer
    In a hydroelectric installation, a turbine delivers 1500 HP to a generator, which in turn converts 80% of the mechanical energy into electrical energy. Under these conditions what current does the generator delivers at a terminal potential difference of 2000 V?

    A)  447.6 A                      

    B)  559.5 A          

    C)  4A                              

    D)  800 A

    Correct Answer: A

    Solution :

     Power transferred to generator = 1500 x 746 W Rate at which electrical energy is produced by generator is,\[P=0.8\times 1500\times 746\,W\] Let generator supplies current I, when potential difference is 2000 V, then


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