Given the angle of rotation is small and the materials remain line a elastic, which statement below is incorrect for the torsional behavior of a long straight circular shaft. a) Section-shape remains unchanged b) Straight member remains straight c) Plane section remains plane d) End of member may warp Which statement below is incorrect? Inelastic torsion of the circular shaft leads to a) non-linear distribution of shear stress b) plane section remaining plane c) change of sectional shape d) warping at the end of member Solution 1) For a linear elastic material with a small angle of rotation there will be no change in section shape or length or plane so the above statements a,b, c are correct but the statement \'D\' is incorrect 2) In a inelastic member there will be change occurs so the statement a,c,d are correct The statement \'B\' is incorrect .