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| Q. |
Filler material is used in electric resistance welding. |
| A. | yes |
| B. | no filler material used |
| C. | depends on the type of welding |
| D. | none of the listed |
| Answer» B. no filler material used | |
| Explanation: no filler material is used. only the heat released from resistance of metallic parts to current is used for melting the adjoining parts. | |
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