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DUMET Medical DUMET Medical Solved Paper-2010

  • question_answer
    An electric motor operating on 15V supply draws a current of 5 A and yields mechanical power of 60 W. The energy lost as heat in one hour (in kJ) is

    A)  0.54  

    B)  5.4   

    C)  54    

    D)  540

    Correct Answer: C

    Solution :

     Input power \[=VI=15\times 5=75W\] Output power = 60W Power lost = 15 W Energy lost \[=15\times 60\times 60\] = 54000 J = 54k J


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