engineering recuitment BHEL Engineer Trainee Mock Test 2025 Strength of Materials Simple Stress and Strain
A mild steel rod of 12 mm diameter is tested for tensile strength with the gauge length of 80 mm. It has been found that final diameter is 8 mm. What will be the percentage reduction in area?
1
44.4 %
2
66.6 %
3
55.5 %
4
71.1%