Welding Exam 19-22 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified
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Module
Welding 19-22
Institution
Welding 19-22
Welding Exam 19-22 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
How can excessive heat affect the base material?
Excessive heat can cause the base material to distort, burn through, or lose its strength,
resulting in a weak or defective weld.
What is the pu...
Welding Exam 19-22 Questions and
Answers | Latest Version | 2024/2025 |
Correct & Verified
How can excessive heat affect the base material?
✔✔ Excessive heat can cause the base material to distort, burn through, or lose its strength,
resulting in a weak or defective weld.
What is the purpose of using a backing bar in welding?
✔✔ A backing bar supports the workpiece, prevents burn-through, and helps control the cooling
rate, leading to a more stable and consistent weld.
What causes a weld to crack during cooling?
✔✔ Cracking during cooling can be caused by excessive heat input, rapid cooling, poor joint
design, or improper filler material selection.
What is the main function of a flux in welding?
✔✔ Flux helps to clean the weld area, remove impurities, and protect the molten weld pool from
contamination during the welding process.
1
,How does joint preparation affect the quality of a weld?
✔✔ Proper joint preparation ensures good alignment, smooth surfaces, and adequate fit-up,
leading to strong, uniform welds and minimizing defects.
What is the effect of incorrect electrode angle on the weld?
✔✔ Incorrect electrode angle can result in poor bead formation, uneven heat distribution, and
inconsistent penetration, leading to weak or visually defective welds.
How does welding position affect the amount of filler material used?
✔✔ In some positions, such as overhead or vertical, more filler material may be needed to
compensate for gravity’s effect on the weld pool.
Why is it important to inspect the weld after it has cooled?
✔✔ Inspecting the weld after cooling ensures that any potential defects, such as cracks, porosity,
or incomplete fusion, can be detected and corrected.
What is the role of a root pass in multi-pass welding?
✔✔ The root pass forms the base layer of the weld, ensuring deep penetration and a solid
foundation for the subsequent passes.
2
, What happens if the weld bead is too wide?
✔✔ A weld bead that is too wide can cause excessive heat input, distortion, and over-welding,
which may weaken the joint and create an uneven surface.
What is the impact of improper shielding gas flow rate?
✔✔ An improper shielding gas flow rate can lead to contamination of the weld pool, causing
defects such as porosity or oxidation.
Why is controlling the welding speed important in vertical welding?
✔✔ In vertical welding, controlling the welding speed prevents the molten weld pool from
sagging or falling, ensuring proper fusion and a uniform bead.
What does underfilling in a weld indicate?
✔✔ Underfilling indicates insufficient filler material, which can result in a weak weld that does
not completely fill the joint gap.
How does welding affect the microstructure of the base material?
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