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| Q. |
Which of the following defects occur due to filler material having a different rate of contraction compared to parent metal? |
| A. | undercut |
| B. | spatter |
| C. | cracking in weld metal |
| D. | cold cracking |
| Answer» C. cracking in weld metal | |
| Explanation: weld cracking occurs close to the time of fabrication. most forms of cracking result from the shrinkage strains that occur as the weld metal cools. it can be of hot cracks types. | |
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