1) Which statement is not correct regarding the deformation of a circular shaft in torsion? a) Radial lines on the sections remain straight. b) Circular sections remain circular. c) Longitudinal lines remain straight. d) Cross sections remain flat. 2) What is the correct statement regarding the stress over the section of a shaft in torsion? a) A normal stress that varies linearly over the section. b) A normal stress that is uniform over the section. c) A shear stress that is uniform over the section. d) A shear stress that varies linearly over the section. What is the correct statement regarding the bending stress over the section of a beam in bending? ☑A normal stress that varies linearly over the section. ☑A shear stress that varies linearly over the section. A shear stress that is uniform over the section. ☐ A normal stress that is uniform over the section. Which statement is not correct regarding the neutral axis of a beam (of a linear-elastic material) in pure bending? The normal strain at the neutral axis is zero. The normal stress at the neutral axis is zero. The neutral axis passes through the centroid of the section. The deflection of the neutral axis is zero.