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A bar of copper and steel form a composite system which is heated through a temperature of 40℃. The stress induced in the copper bar is (αcopper > αsteel ).
  • a)
    Tensile
  • b)
    Compressive
  • c)
    Both tensile and compressive
  • d)
    Shear
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
A bar of copper and steel form a composite system which is heated thr...
As thermal coefficient of expansion (α) is more for copper in comparison to steel. So during heating, the tendency of copper is to elongate more, which will be restricted by steel. So copper will experience compressive stress while steel will experience tensile stress.
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A bar of copper and steel form a composite system which is heated through a temperature of 40℃. The stress induced in the copper bar is (αcopper > αsteel ).a) Tensileb) Compressivec) Both tensile and compressived) ShearCorrect answer is option 'B'. Can you explain this answer?
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