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UPSC Civil Service Exam Questions

Q1:

A compound bar consisting of material A and B is tightly secured at the ends. The coefficients of thermal expansion of A is more than that of B. When the temperature is increased the stresses induced will be

A tensile in both the materials

B tensile in material A and compressive in material B

C compressive in material A and tensile in material B

D compressive in both the materials

ANS:C - compressive in material A and tensile in material B

Tightly secured in both ends so that both rod in compressive.



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