Question

Maximum shear stress developed on the surface of a solid circular shaft under pure torsion is 240 MPa. If the shaft diameter is doubled then the maximum shear stress developed corresponding to the same torque will be

(a) 120 MPa                     (b) 60 MPa

(c) 30 MPa                       (d) 15 MPa

Answer 1

Given max shear stress developed due to pure torsion on the surface of a circular shaft