AG Mechanics CDE Practice Exam

MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas) welding are both types of gas metal arc welding techniques commonly used in industrial and manufacturing settings. They use a similar method of arc welding, the only difference being the type of electrode used. MIG welding uses a consumable electrode whereas TIG welding uses a non-consumable electrode. Both techniques produce clean and precise welds, making them ideal for welding thin materials. Therefore, they are often referred to as Gas Metal Arc Welding (GMAW) techniques. Option B, GTAW, stands for Gas Tungsten Arc Welding, which is another term for TIG welding. Option C, SMAW, is short for Shielded Metal Arc Welding, also known as stick welding, which is a different type of welding technique that involves using a coated electrode. Therefore, these answers are not correct as they do not accurately describe both MIG and TIG welding techniques.