10th Class Science Magnetic Effects of Electric Current Question Bank Magnetic Effects of Electric Current

  • question_answer
    Which of the following does NOT increase the power of a D.C. motor?

    A) An increase in the number of turns in the coil

    B) An increase in the area of cross- section of the coil

    C) An increase in the size of the core

    D) The winding of a large number of coils on the soft iron core

    Correct Answer: C

    Solution :

    The power of a D.C motor can be increased by laminating the soft core, and not by increasing the size of core.


You need to login to perform this action.
You will be redirected in 3 sec spinner