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Discussion :: Rectifiers and Converters

  1. When a rotor converter is started by means of a small auxiliary motor, the power of motor must be
    2. A.
    more than the dc output of converter
    B.
    more than ac input of converter
    C.
    half of dc output of converter
    D.
    slightly more than the value of friction and windage losses at rated speed

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    Answer : Option D

    Explanation :

    slightly more than the value of friction and windage losses at rated speed

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