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Discussion :: Measurements and Instrumentation

  1. If the secondary winding of CT is opened when primary coil is carrying current

  2. A.
    transformer will burn immediately
    B.
    there will be weak flux density in core
    C.
    there will be very high induced voltage in secondary
    D.
    there will be high current in secondary

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    Answer : Option C

    Explanation :

    Since the primary of CT always remains excited, a high voltage is induced in secondary if the secondary is opened.


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