Correct option is D
Gas Metal Arc Welding (GMAW) is the technical term for MIG Welding (Metal Inert Gas Welding). It is a welding process where a continuous consumable wire electrode is fed through the welding gun, and an inert or semi-inert shielding gas (e.g., argon or carbon dioxide) is used to protect the weld area from contamination.
The GMAW process is highly efficient, fast, and suitable for a variety of materials, including carbon steel, stainless steel, and aluminum. It is widely used in industrial applications, particularly in automotive and construction industries.
TIG Welding (Tungsten Inert Gas Welding), also known as
Gas Tungsten Arc Welding (GTAW), uses a non-consumable tungsten electrode to produce the weld.
It is different from MIG welding as it does not use a consumable wire electrode. TIG welding is used for precision welding, especially on thin materials.