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Mechanical Engineering · Q37

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Engineering and GATE · Mechanical Engineering · question 37

Q37

In welding magnesium with TIG arc welding, direct current with ________ is used.

A.
Straight polarity
B.
Reversed polarity
Answer
C.
Both (A) and (B)
D.
None of these

Answer: Option B

Solution

Answer: Option B
Solution:
In welding magnesium with TIG arc welding, direct current with Reversed polarity is used
The preferred polarity of the GTAW system depends largely on the type of metal being welded.
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