Launch the simulation, then answer the question Which statement is not correct regarding the deformation of a circular shaft in torsion?

Cross sections remain flat.
Longitudinal lines remain straight.
Circular sections remain circular.
Radial lines on the sections remain straight.

correct answer is (b)  Longitudinal lines remain straight

Explanation:

solution

As we know that Deformation of circular shaft in the torsion is associate with twisting of  shaft more than an specify with the yielding limit.

so when any angle of twist is obtain in the torsion and that is beyond the specified safety limit of shaft

than that shaft will be fail.

but it does not regain its original shape and it will cause permanent deformation

so that we can say longitudinal lines which is twist, they will not regain to original back position as straight

but they will remain in curved shape.

so here incorrect statement is b Longitudinal lines remain straight

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