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?
A. Tension in both the materials
B. Tension in material A and compression in material B
C. Compression in material A and tension in material B
D. Compression in both the materials
Answer:D
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?
A. Tension in both the materials B. Tension in material A and compression in material B C. Compression in material A and tension in material B D. Compression in both the materials
Explanation: Since both the supports are fixed and both bars will try to expand, so rise in temperature will cause compressive stresses in the bars.