The Von-Mises stress will be equal to zero when a) oxσy σ and Txy = Tyz = Tzx = 0 b) σx 0 and σy = 0₂ = Txy = Tyz = zx = 0 c) Txy #0 and σx = Oy = 0₂ = Tyz = Tzx = 0 d) None of the above e) All of the above A cantilever beam having a rectangular cross section as shown. A force F is to be applied at the free end. The strain energy in the beam a) will be higher if the force is applied in the direction of the x axis. b) will be higher if the force is applied in the direction of the y axis. c) will be the same whether the force is applied in the direction of the x or y axis. d) depends only on the magnitude of the force. For a ductile material subjected to uni-axial stress, which of the flowing is true? a) The factor of safety obtained using the DE theory will be smaller than that obtained using the MSS theory. b) The factor of safety obtained using the DE theory will be larger than that obtained using the MSS theory. c) Both the DE and MSS theories will give the same factor of safety. d) The MSS theory can not be used for ductile materials.