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Manipal Medical Manipal Medical Solved Paper-2004

  • question_answer
    Railway wagon axles are made by heating iron rods embedded in charcoal powder. This process is known as:

    A)  tempering  

    B)  anneling

    C)  sherardising

    D)  case hardening

    Correct Answer: D

    Solution :

     In case hardening technique, iron rods embedded in charcol powder are heated repeatedly and thus/this technique is used in making axles of railway wagon.


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