Under normal operating conditions, the electric motor exerts a torque of 2.4 kN.m on shaft AB. Knowing that each shaft is solid, determine the maximum shearing stress in; (a) shaft AB, (b) shaft BC, (c) shaft CD. 54 mm B T = 1.2 kN.m 46 mm Tc = 0.8 kN.m 55 mm Tp = 0.4 kN.m 45 mm E