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Question
Assertion :The strain present in the material after unloading is called the residual strain or plastic strain and the strain disappears during unloading is termed as recoverable or elastic strain. Reason: After yieild point, there is some residual stress left in an material on unloading.
Assertion :The strain present in the material after unloading is called the residual strain or plastic strain and the strain disappears during unloading is termed as recoverable or elastic strain. Reason: After yieild point, there is some residual stress left in an material on unloading.
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Solution
The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
A→Elastic limit.B→Yield Point.C→Breaking Point.If any materials gets plastic strain,then it is impossible to get it to its previous shape. So,then a residual strain remains there in the materials and incase if the materials is within elastic limit then it is possible to get it break to its original shape.At yield Point B it gets some plastic property.
A→Elastic limit.
B→Yield Point.
C→Breaking Point.
If any materials gets plastic strain,then it is impossible to get it to its previous shape. So,then a residual strain remains there in the materials and incase if the materials is within elastic limit then it is possible to get it break to its original shape.
At yield Point B it gets some plastic property.
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