Railways Technical Ability Metrology and Inspection Question Bank Metrology and Inspection

  • question_answer A slot is to be milled centrally on a block with a dimension of \[40\pm 0.05\,\,mm.\] A milling cutter is 20 mm width is located with reference to the side of the block within \[\pm \,\,0.02\,\,mm.\] The maximum offset in mm between the centre line of the slot and the block is:

    A) \[\pm 0.070\]                 

    B) \[0.070\]

    C) \[\pm 0.020\]                 

    D) \[0.045\]

    Correct Answer: C

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