⚙️ FE Exam Prep

The shear stress in a circular shaft under torsion is given by:

A τ = F/A
B τ = Tr/J (where T = torque, r = radius, J = polar moment)
C τ = Mc/I
D τ = P/A

✓ Correct Answer: Option B

Torsion formula: τ = Tr/J. Maximum shear stress occurs at the outer surface (r = c).

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