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| Q. |
Which of the following will not happen when metal is cooled fast in annealing? |
| A. | warping of material |
| B. | cracking of material |
| C. | formation of thermo elastic stresses |
| D. | strength increase |
| Answer» D. strength increase | |
| Explanation: a material in annealing is cooled slowly to avoid warping of the material, cracking of the material due to the formation of thermal gradients and thermo elastic stresses inside the body. | |
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