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  1. In a 3 phase full wave regulator feeding a star connected resistance load the input voltage is 400 V line to line. The firing angle is 160°. The line to line output voltage would be

    2. A.
    400 V
    B.
    about 100 V
    C.
    about 20 V
    D.
    zero

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    Answer : Option D

    Explanation :

    In a three-phase full wave regulator, output voltage is zero if a ≥ 150°.

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