ISRO Scientist Civil Practice Questions - ISRO Scientist Engineer SC - Civil Engineering Exam

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A steel bar of length L, cross-sectional area A, and coefficient of thermal expansion α is fixed at both ends. If the temperature of the bar is increased by ΔT, what is the magnitude of the thermal stress developed in the bar, assuming Young's modulus is E?

α·ΔT·E α·ΔT·E·L α·ΔT·E / L Zero

Correct Answer:

α·ΔT·E

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