Railways
NTPC (Technical Ability)
Engineering Mechanics and Strength of Materials
Question Bank
Strength of Materials
question_answer
Circumferential stress in a cylindrical steel boiler shell under internal pressure is 80 MPa, Young's modulus of elasticity and Poisson's ratio are respectively \[2\times {{10}^{5}}\] MPa and 0.28. The magnitude of circumferential strain in the boiler shell will be