Preview Questions Welding Technician | Role Specific Skill

Question 1: What is the term for a condition in a welded joint where the heat from welding causes the surrounding metal to weaken?

Which action should you take?

Choose only one option

Heat-affected zone (HAZ)

Parent metal degradation

Thermal stress concentration

Weld burn-through

Question 2: What is the effect of an incorrect welding speed in the MIG process?

Which action should you take?

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It reduces the required heat input for the material

It can result in poor bead formation, excessive spatter, and undercutting

It improves bead appearance but weakens the weld strength

It makes the weld faster without any negative effect

Question 3: How does "electrode diameter" influence the welding process and weld quality in SMAW?

Which action should you take?

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Electrodes with larger diameters produce weaker welds and reduced arc stability

Electrode diameter only affects the aesthetic quality and does not influence weld integrity

Smaller electrodes provide better penetration while larger ones are used for higher heat input

Larger diameter electrodes provide better arc stability and deeper penetration, while smaller ones reduce heat input

Question 4: What is the purpose of a fillet weld throat dimension measurement during inspection?

Which action should you take?

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To evaluate the uniformity of the weld bead

To ensure the weld meets the minimum size for strength and load-bearing capacity

To measure the depth of penetration in the base material

To determine the correct spacing between the weld and the material

Question 5: How does "shielding gas flow rate" impact the welding process?

Which action should you take?

Choose only one option

Shielding gas flow rate is not necessary if proper machine settings are in place

It tracks only the gas cylinder pressure, ignoring the importance of maintaining the correct flow rate

The correct flow rate prevents contamination, porosity, and ensures a clean, high-quality weld

Flow rate has no effect on the quality of the weld and only impacts the weld appearance

Question 6: What is the most common cause of weld porosity, and how can it be prevented?

Which action should you take?

Choose only one option

Overheating the weld, which can be prevented by increasing welding speed

Incorrect amperage settings, which can be controlled by monitoring the meter

Contaminated base materials or improper shielding gas flow, which can be prevented by thorough cleaning and proper gas flow

Using the wrong electrode, which can be avoided by proper selection