Red Seal Welding Practice Exam

When welding a capo in 3F, and getting undercut, what's the problem?

1. Incorrect wire speed

2. Excessive current

3. Wrong electrode angle

4. Improper shielding gas flow

The correct answer is: Excessive current

When welding a capo in 3F, the problem of undercut occurs due to excessive current. Incorrect wire speed can lead to uneven and inconsistent welds, but it would not cause undercut specifically. Wrong electrode angle can result in insufficient penetration, but it would not cause the formation of undercut. Similarly, improper shielding gas flow can cause porosity in the weld, but it would not contribute to undercut. Therefore, excessive current is the most likely culprit for the problem of undercut in this scenario.