Q12
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
AnswerD.
both a and r are true, and r is not the reason for a
Answer: Option C
Solution
Answer: Option C
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