Certified Welding Inspector Practice Exam

What is an arc seam weld?

1. A weld made by an arc welding process

2. A weld made without the use of electrical arcs

3. A type of weld focused on decorative finishing

4. A joint formed by mechanical fastening

The correct answer is: A weld made by an arc welding process

An arc seam weld is a weld created using an arc welding process, which utilizes the heat generated from an electric arc to melt the base materials and, if necessary, filler material to form a solid connection once cooled. This type of welding is characterized by its efficiency in joining metals and is commonly employed in various applications, from structural to manufacturing processes. The electric arc provides a concentrated heat source, allowing for precise control over the weld depth and penetration. This results in strong and durable welds that can withstand different types of stress and strain, making it a favored choice in industry settings. The defining feature of an arc seam weld is its reliance on this electrical arc, which distinguishes it from other welding techniques that may not use electrical energy, thus ensuring a very particular welding method and resulting joint integrity.