engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Strength of Materials Simple Stress and Strain Thermal Stress and Strain
A free bar of length 1 m is uniformly heated from 0°C to a temperature t°C. If α is the coefficient of linear expansion and E is the Modulus of Elasticity. The stress in the bar is
1
αTE
2
E/αT
3
Zero
4
None of the above