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| Q. |
Which of the following welding process in which two pieces to be joined are overlapped and placed between two pointed electrodes? |
| A. | seam welding |
| B. | resistance welding |
| C. | projection welding |
| D. | spot welding |
| Answer» D. spot welding | |
| Explanation: spot welding is the simplest and most used resistance welding process. welding may be performed by means of single (most common) or multiple pairs of electrodes (as many as a hundred or more), and the required pressure is supplied through mechanical or pneumatic means. | |
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