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  1. A single phase semiconverter has a freewheeling diode. If the firing angle is a and the load is purely resistive, the periods of conduction and freewheeling respectively are

    2. A.
    p - a and 0
    B.
    p - a and a
    C.
    p + a and 0
    D.
    p + a and a

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    Answer : Option A

    Explanation :

    Freewheeling diode conducts only when load is inductive. If load is purely resistive free wheeling diode does not come into operation.

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