At yield point of a test piece, the material ________.
| At yield point of a test piece, the material ________.
A. Obeys Hooke's law
B. Behaves in an elastic manner
C. Regains its original shape on removal of the load
D. Undergoes plastic deformation
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
Before the yield point, the material obeys Hooke’s law and behaves in an elastic manner. In elastic-zone, the material regains its original shape or size on the removal of external load. But at yield point, the material undergoes permanent deformation or plastic deformation and can not regain its original shape on removal of external load.
