Railways Technical Ability Instrument Mechanical Question Bank Instrument Mechanical

  • question_answer Consider the following statements:
    Thermal stress is induced in a component in general, when
    1. A temperature gradient exists in the component.
    2. The component is free from any restraint.
    3. It is restrained to expand or contract freely.
    Which of the above statements is/are correct?

    A) 1 and 2            

    B) 2 and 3

    C) 3 alone             

    D) 2 alone.

    Correct Answer: C

    Solution :

    Thermal stress is induced in a component when it is restrained to expand or contract freely.


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