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Discussion :: Power Electronics

  1. An electric heater is controlled by thyristors through on-off control. If a = 0.4, the heating is

    2. A.
    16% maximum
    B.
    40% of maximum
    C.
    60% of maximum
    D.
    84% of maximum

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    Answer : Option B

    Explanation :

    Vl = V a. Therefore Vl2 - V2 (a). Heating is proportional to a.

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