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

  • question_answer In drawing operation, proper lubrication is essential for which of the following reasons.
    1. To improve die life
    2. To reduce drawing forces
    3. To reduce temperature
    4. To improve surface finish
    Select the correct answer using the code given below:

    A) 1 and 2 only                 

    B) 1, 3 and 4 only

    C) 3 and 4 only                 

    D) 1, 2, 3 and 4

    Correct Answer: D

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