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Question

A composite system where the components are of equal lengths is subjected to temperature rise. Which one of the following stresses will be developed in the component having highest coefficient of linear expansion?

A
Compressive stress
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B
Tensile stress
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C
Shear stress
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D
Zero stress
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Solution

The correct option is A Compressive stress
The component having higher coefficient of linear expansion will have tendency to expand but its movement will be restricted by component having lower coefficient of linear expansion and thus will be in compression.

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