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Discussion :: Electric Traction

  1. Method of speed control used on 25 kV, 50 Hz single phase traction is
    2. A.
    Tap changing control of transformer
    B.
    Reduced current method
    C.
    Series parallel operation of motors
    D.
    Any of the above

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    Answer : Option A

    Explanation :

    Tap changing control of transformer

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