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

  • question_answer
    In orthogonal cutting, the depth of cut is 03 mm at a cutting speed of 2 m/s. If the chip thickness is 0.75 mm, the velocity is:

    A) 133 m/s            

    B) 2 m/s

    C) 23 m/s              

    D) 3 m/s

    Correct Answer: A

    Solution :

    Chip velocity, \[{{v}_{f}}=\]Chip thickness ratio \[\times \] Cutting speed \[=\frac{0.5}{0.75}\times 2\] \[=\text{ }1.33\text{ }m/s\]


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