Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Forming

  • question_answer For calculating the blank diameter D for thin cylindrical shell of outer diameter d and with height of the shall h, which one of the following formulae is used when d 220r, where r is the comer radius on the punch?

    A) \[D=\sqrt{{{d}^{2}}+4d{{h}^{2}}}\]

    B) \[D=\sqrt{{{d}^{2}}+4dh-0.5r}\]

    C) \[D=\sqrt{{{d}^{2}}+4dh-r}\]

    D) \[D=\sqrt{{{d}^{2}}+4dh-1.5r}\]

    Correct Answer: A


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