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    Question

    A device used for converting A.C. into D.C. is called

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    A Transformer Correct Answer Incorrect Answer
    B Rectifier Correct Answer Incorrect Answer
    C Induction coil Correct Answer Incorrect Answer
    D Dynamo Correct Answer Incorrect Answer

    Solution

    A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves,  solidstate  diodes,  silicon-controlled rectifiers and other silicon-based semiconductor switches.

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