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This question belongs to Metallurgical Engineering Welding Metallurgy

Welding Metallurgy

?

Determine the correctness or otherwise of the following Assertion (a) and Reason (r).
Assertion (a): During welding of aluminium alloys by the gas tungsten arc welding process, direct current reverse polarity (DCRP) mode is used.
Reason (r): DCRP facilitate breaking up of the oxide film on the workpiece surface.

A) a is true but r is false B) a is false but r is true C) both a and r are true, and r is the reason for a D) both a and r are true, and r is not the reason for a

Answer & Solution

Correct Answer: Option C

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