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| Q. |
Which of the following defects occur at a lower temperature? |
| A. | undercut |
| B. | hot cracking |
| C. | cracking in weld metal |
| D. | cold cracking |
| Answer» D. cold cracking | |
| Explanation: cold cracks are those that occur after the weld metal has cooled to room temperature and may be hydrogen related. | |
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