Torsion MCQs – Part 3
2 questions. Tap an option to check it instantly, then read the solution.
Question 31Easy
The strain energy per unit volume of a solid circular shaft under axial tension is:
Answer: A. σ²/(2E)
Under axial tension the stress is uniform, so U/V = σ²/2E (½ × stress × strain).
Question 32Easy
The maximum shear stress produced in a solid circular shaft under torque T is:
Answer: B. 16T/(πD³)
τ = T(D/2)/(πD⁴/32) = 16T/(πD³).