Physics · Thermal Properties and Applications
The fundamental principle of electric arc welding is based primarily on the:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1compression of adjacent metals under high mechanical pressure
- 2generation of heat exclusively from the internal electrical resistance of the materials being joined
- 3heat generated by a continuous electric arc sustained between an electrode and the workpiece✓
- 4heat produced by rapid friction between contact surfaces
Correct answer
heat generated by a continuous electric arc sustained between an electrode and the workpiece
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