Welding Level 1 Module 1 Review Questions/Answers | Latest Version | 2024/2025 | Correct & Verified

Welding Level 1 Module 1 Review Questions/Answers | Latest Version | 2024/2025 | Correct & Verified What is the purpose of wearing a welding helmet? A welding helmet protects the face, eyes, and neck from harmful UV rays, sparks, and heat. What is a weld bead? A weld bead is the deposited metal created during the welding process. Why is it important to clean the base metal before welding? Cleaning removes contaminants like rust, oil, and dirt that can weaken the weld. What is the function of a grounding clamp in welding? The grounding clamp completes the electrical circuit, ensuring safe and efficient welding. What is an electrode? An electrode is a rod or wire that conducts electricity and provides filler metal during welding. 2 What is slag in welding? Slag is the layer of flux and impurities that forms on top of the weld bead, protecting it as it cools. What is the purpose of preheating the metal before welding? Preheating reduces the risk of cracking by minimizing temperature differences in the metal. Why is ventilation important during welding? Ventilation removes harmful fumes and gases, ensuring a safe breathing environment. What is the role of flux in welding? Flux protects the molten weld pool from oxidation by forming a gas shield or slag layer. What is a fillet weld? A fillet weld joins two surfaces at a right angle, such as in T-joints or corner joints. Why is it important to inspect welds after completion? 3 Inspection ensures that welds meet quality and safety standards without defects like cracks or porosity. What is the difference between AC and DC welding? AC welding uses alternating current, while DC welding uses direct current, which provides more stability. What is porosity in welding, and how can it be prevented? Porosity is the presence of gas pockets in the weld, which can be prevented by proper cleaning and shielding. What is the purpose of a welding positioner? A welding positioner holds the workpiece in place, allowing the welder to work at an optimal angle. What does the term "arc length" refer to in welding? Arc length is the distance between the electrode tip and the workpiece during welding. What safety equipment should be used during welding? 4 Welding helmet, gloves, fire-resistant clothing, safety boots, and safety glasses. What is tack welding? Tack welding involves making small welds to temporarily hold parts in position before final welding. What is the difference between MIG and TIG welding? MIG welding uses a wire electrode and shielding gas, while TIG welding uses a tungsten electrode and may or may not use filler metal. What is a root pass in welding? The root pass is the first weld pass made in a multi-pass welding process. What causes weld spatter, and how can it be minimized?