SSC JE Mechanical Engineering 27 Sep 2019 Shift 1 Paper

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Question : 180 of 200

Marks: +1, -0

Heat treatment of steel ______.

can be used to change the carbon percentage.
involves heating steel to a temperature above the recrystallization point and then cooling.
is effective when the carbon percentage is lower than 0.8%
cannot be used to relieve local stresses and strains.

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