Welding Module Two Review Questions | Latest Version | 2024/2025 | Correct & Verified
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Module
Welding Module Two
Institution
Welding Module Two
Welding Module Two Review Questions |
Latest Version | 2024/2025 | Correct &
Verified
What is the spark in welding called, and why is it important?
It’s the welding arc, and it provides the heat needed to melt the base and filler metals.
Why does a welder wear a helmet with a darkened...
Welding Module Two Review Questions |
Latest Version | 2024/2025 | Correct &
Verified
What is the spark in welding called, and why is it important?
✔✔ It’s the welding arc, and it provides the heat needed to melt the base and filler metals.
Why does a welder wear a helmet with a darkened lens?
✔✔ To protect their eyes from harmful UV radiation and bright light from the welding arc.
What happens when a weld lacks penetration?
✔✔ The weld is weak and may fail under load because it hasn’t fused properly through the joint
thickness.
What is the “puddle” in welding?
✔✔ The molten pool of metal created by the heat of the arc during welding.
Why do welding rods have a coating, and what does it do?
✔✔ The coating provides shielding, stabilizes the arc, and helps produce slag to protect the weld.
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, How can you tell if a weld is too hot?
✔✔ By observing excessive burn-through, discoloration, or a large weld pool that’s hard to
control.
What does it mean when the weld "hisses" instead of "buzzes"?
✔✔ It often indicates incorrect shielding gas flow or an unstable arc.
Why is post-weld cooling sometimes controlled?
✔✔ To prevent cracking or distortion by managing the cooling rate of the weld and base
material.
What’s the purpose of weaving the electrode in welding?
✔✔ To create a wider bead and ensure proper fusion along the joint edges.
How can you identify a weld with good fusion?
✔✔ The bead smoothly transitions into the base metal without gaps or undercut.
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