Railways NTPC (Technical Ability) Power Plant Engineering Question Bank Power Plant Engineering

  • question_answer
    External threads can be produced by:
    1. Rolling
    2. Grinding
    3. Milling

    A) 1 and 3 only                 

    B) 1 and 2 only     

    C) 2 and 3 only                 

    D) 1, 2 and 3         

    Correct Answer: D

    Solution :

    External threads can be produced by rolling, grinding and milling. 


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