General Studies · Welding Processes
What does the basic principle of arc welding involve to melt the metal?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Generating mechanical friction between the electrode and the workpiece
- 2Creating an exothermic chemical reaction between the electrode and the workpiece
- 3Supplying a mixture of oxygen and acetylene gases between the electrodes
- 4Creating a flow of electric current across the air gap between the electrode and the workpiece✓
Correct answer
Creating a flow of electric current across the air gap between the electrode and the workpiece
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