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| Q. |
What is the maximum thickness of the walls of tube machined using plasma arc? |
| A. | 10 mm |
| B. | 30 mm |
| C. | 50 mm |
| D. | 70 mm |
| Answer» C. 50 mm | |
| Explanation: the maximum thickness of the wall tubes that can be produced using pbm is about 50 mm. | |
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