# Questions & Answers of Uniform torsion

A hollow circular shaft has an outer diameter of  100 mm and inner diameter of 50 mm. If the allowable shear stress is 125 MPa. The maximum torque (in kN-m) that the shaft can resist is ______

A solid circular shaft of diameter d and length L is fixed at one end and free at the other end. A torque T is applied at the free end. The shear modulus of the material is G. The angle of twist at three free ends is

The maximum shear stress in a solid shaft of circular cross-section having diameter subjected to a torque T is $\tau$ . If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be