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Railways R.R.C. (Kolkata) Solved Paper Held on 17-11-2013

  • question_answer
    The picture tube of a black and white T.V. set has only one electron gun that produces the picture on its screen. The number of electron guns, a colour picture tube has, is?

    A) Five                             

    B) Three

    C) Four                             

    D) Six

    Correct Answer: B

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