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Railways R.R.C. (Kolkata) Solved Paper Held on 2nd Shift 9-11-2014

  • question_answer
    An alternating current can be changed into a direct current by means of a?

    A) capacitor                      

    B) transistor

    C) diode                

    D) triode

    Correct Answer: C

    Solution :

    A rectifier converts the alternating current into direct current. The most common type of rectifier is the semiconductor diode.


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