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Railways NTPC (Technical Ability) Communication System / संचार तंत्र Question Bank Communication System

  • question_answer
    The illumination on screen when there is no broadcast or telecast, is known as

    A)  raster   

    B)  contrast

    C)  both [a] and [b]

    D)  none of the above

    Correct Answer: A

    Solution :

    Not Available  


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