AG Mechanics CDE Practice Exam

MIG welding stands for Metal Inert Gas welding, which is also known as Gas Metal Arc Welding (GMAW). This welding process utilizes a tungsten tip and a filler rod to create a bead while being shielded by gas. The tungsten tip is used to create the electric arc necessary for welding, while the filler rod adds material to the weld joint. The shielding gas protects the weld from atmospheric contamination during the welding process.

Therefore, the correct answer is A. MIG welding.

SMAW (B) stands for Shielded Metal Arc Welding, commonly known as stick welding, which uses a flux-coated electrode.

TIG welding (C) stands for Tungsten Inert Gas welding, also known as Gas Tungsten Arc Welding (GTAW), where a non-consumable tungsten electrode is used to create the weld.

Wire welding (D) is a general term that can refer to various types of welding processes that involve feeding a continuous wire electrode to create the weld.