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| Q. |
Arc blow is a welding defect which is encountered |
| A. | In thermit welding |
| B. | In MIG welding |
| C. | In arc welding using a.c. current |
| D. | In arc welding using d.c. current |
| E. | In gas welding |
| Answer» D. In arc welding using d.c. current | |
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