Railways NTPC (Technical Ability) Materials Science Question Bank Materials Science

  • question_answer
    Temperature required for full annealing in hyper- eutectoid steel is:

    A) \[50{}^\circ C\] above upper critical temperature \[(A{{C}_{3}})\]

    B) \[50{}^\circ C\] below upper critical temperature \[(A{{C}_{3}})\]

    C) \[50{}^\circ C\] above lower critical temperature \[(A{{C}_{1}})\]

    D) \[50{}^\circ C\] below lower critical temperature \[(A{{C}_{1}})\]

    Correct Answer: A


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