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Manipal Medical Manipal Medical Solved Paper-2003

  • question_answer
    If the rotational velocity of a dynamo armature is doubled, then induced emf will be:

    A)  unchanged

    B)  four times

    C)  two times

    D)  half

    Correct Answer: C

    Solution :

     According to Faradays law induced emf\[e=0.5\] \[B\omega R\]or \[\Rightarrow \] \[e\propto \omega \] Here\[\omega \]is the angular velocity of dynamo armature. Hence, if the angular velocity of a dynamo armature is doubled, then the induced emf will be doubled.


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