Which of the following welding processes is associated with the use of a continuously fed wire electrode?

The choice of Metal Inert Gas Welding is correct because this welding process specifically utilizes a continuously fed wire electrode that serves as both the filler material and the electrical conductor. In MIG welding, a spool of wire is automatically fed through a welding gun, enabling a continuous and efficient welding operation. This allows for greater mobility and a faster welding speed compared to methods that require manually feeding filler material.

In this process, an inert gas, often argon or a mixture of gases, surrounds the weld area. This shielding gas protects the molten weld pool from atmospheric contamination, which is critical for achieving strong and clean welds.

In contrast, Shielded Metal Arc Welding relies on a consumable electrode that is manually struck against the workpiece to create an arc, while the electrode is slowly consumed as welding progresses. Gas Tungsten Arc Welding, on the other hand, uses a non-consumable tungsten electrode and requires a separate filler material that is manually added rather than continuously fed. Lastly, Submerged Arc Welding involves a granular flux covering the weld zone and typically uses a continuously fed wire electrode as well, but it is distinct from MIG welding in how the arc is shielded.

Overall, the use of a continuously fed wire in Metal Inert Gas Welding fundamentally differenti