The diameter of the solid shaft shall be

Question

A solid shaft is to transmit 20 kW at 200 r.p.m. The ultimate shear stress for the shaft material is 360 MPa and the factor of safety is 8. The diameter of the solid shaft shall be

 

         (a) 42 mm                       (b) 45 mm

         (c) 48 mm                       (d) 51 mm