Consider two bars A and B of same material tightly secured between two unyielding walls. Coefficient of thermal expansion of bar A is more than that of B. What are the stresses induced on increasing the temperature?

Compression in both the materials

Tension in material A and compression in material B

Compression in material A and tension in material B

A round bar made of same material consists of 4 parts each of 100mm length having diameters of 40mm 50mm 60mm and 70mm respectively. If the bar is subjected to an axial load of 10kN what will be the total elongation of the bar in mm?

40/πE ( 1/16 + 1/25 + 1/36 + 1/49)

0.4πE ( 116 + 125 + 136 + 149)

Compression in both the materials

Tension in material A and compression in material B

Compression in material A and tension in material B

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