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Railways NTPC (Technical Ability) Metrology and Inspection Question Bank Metrology and Inspection

  • question_answer
    Ideal surface roughness, as measured by the maximum height of unevenness, is best achieved when the material is removed by:

    A) An end mill

    B) A grinding wheel

    C) A tool with zero nose radius

    D) A ball mill.

    Correct Answer: D

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