Question

In cold working of metal as compared to its hot working

a.

cracks and blow holes are eliminated.

b.

ductility and impact strength improves.

c.

appreciable strain hardening is produced.

d.

yield stress, hardness and fatigue strength is not at all affected.

Answer: (d).yield stress, hardness and fatigue strength is not at all affected.

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Q. In cold working of metal as compared to its hot working

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