engineering recuitment ECIL GET Mechanical Mock Test 2024 Strength of Materials Simple Stress and Strain Thermal Stress and Strain
The steel bar AB varies linearly in diameter from 25 mm to 50 mm in a length 500 mm. It is held between two unyielding supports at room temperature. What is the stress induced in the bar, if temperature rises by 25°C? Take E = 2 × 105 N/mm2 and α = 12 × 10-6/°C.
1
110 N/mm2
2
140 N/mm2
3
120 N/mm2
4
150 N/mm2