Welding Module 12 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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Module
Welding Module 12
Institution
Welding Module 12
Welding Module 12 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What happens if you weld on a dirty surface?
The weld quality decreases, and it could lead to weak joints or defects.
Why does a welder wear a leather apron?
To protect against sparks, heat, and mo...
Welding Module 12 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
What happens if you weld on a dirty surface?
✔✔The weld quality decreases, and it could lead to weak joints or defects.
Why does a welder wear a leather apron?
✔✔To protect against sparks, heat, and molten metal splatter during welding.
What is the purpose of tacking a joint before welding it fully?
✔✔To hold the pieces in position and maintain alignment during the welding process.
Why is post-weld heat treatment sometimes necessary?
✔✔To relieve residual stresses and improve the weld's strength and durability.
What is undercut in a weld, and why should it be avoided?
✔✔An undercut is a groove left at the weld toe that weakens the joint and can lead to failure.
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, How does weld porosity occur?
✔✔It happens when gas gets trapped in the molten weld pool, often due to contamination or
improper shielding gas.
Why should welding cables be kept free from damage?
✔✔Damaged cables can cause electrical hazards and reduce welding efficiency.
What is the importance of maintaining a consistent welding arc length?
✔✔It ensures uniform heat input and a stable weld bead.
Why is a proper welding position critical?
✔✔It provides better control over the weld and reduces fatigue for the welder.
What could happen if the welding machine settings are too high?
✔✔It can lead to excessive heat, burn-through, and poor weld quality.
How can you tell if a weld has good penetration?
✔✔The weld fuses completely through the joint, with no gaps or weak areas.
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