Coating provided on the electrodes used in the arc welding is not expected to_________________?
Correct answer: B. Prevent electrode from contamination
- A. Add alloying elements
- B. Prevent electrode from contamination
- C. Stabilise the arc
- D. Provide protective atmosphere to weld
Explanation
An electrode coating is designed to protect the weld pool from atmospheric contamination, stabilize the arc, and sometimes add alloying elements. It does not primarily protect the electrode itself from contamination.
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