engineering recuitment TNPSC AE Civil 2024 Test series Strength of Materials Simple Stress and Strain Thermal Stress and Strain
Two rods of different materials having coefficient of linear expansion α1, α2 and Young's moduli E1, E2 respectively are fixed between the massive walls. The rods are heated such that they undergo the same increase in temperature. There is no bending of the rods. If α1 ∶ α2 = 2 ∶ 3, the thermal stresses are equal, what is the ratio of E1 to E2?
1
2 ∶ 3
2
1 ∶ 1
3
3 ∶ 2
4
4 ∶ 9