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Discussion :: Electric Traction

  1. For three-phase induction motors which of the following is the least efficient method of speed control?

    2. A.

     Cascade control
    B.

     Pole changing
    C.

     Rheostat control
    D.

     Combination of cascade and pole changing

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    Workspace

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    Answer : Option C

    Explanation :

    Explanation Not Provided

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