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Railways NTPC (Technical Ability) Metal Forming, Casting and Cutting Question Bank Metal Forming

  • question_answer
    The force required for piercing a round hole when the die and punch are not provided with any shear is given by: Where L = length of die land, D = diameter of hole, T = thickness, S = shear strength

    A) LST                             

    B) \[\pi \] DS       

    C) DLST               

    D) \[\pi \] DST      

    Correct Answer: D

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