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Decomposition Reaction

The electrode...

Question

The electrodes used in arc welding are coated. This is not expected to

A

Add alloying elements

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B

Stabilize the arc

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C

Provide protective atmosphere to weld

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D

Prevent electrode from contamination

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Solution

The correct option is D Prevent electrode from contamination
Coating is provided to produce shielding gases, remove oxides, stabilize the arc and provide alloying elements to improve strength and physical properties of the weld metal.

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