AG Mechanics CDE Practice Exam

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Prepare for the AG Mechanics CDE Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What does MIG stand for?

  1. Metal Inner Gas

  2. Metal Insert Gas

  3. Metal Inert Gas

  4. Metal Ion Gas

The correct answer is: Metal Inner Gas

MIG stands for Metal Inert Gas, not Metal Inner Gas, Metal Insert Gas, or Metal Ion Gas. MIG welding uses an electric arc to heat and melt a consumable wire electrode, which is then fed into the joint and joins the two base materials together. The role of the gas in MIG welding is to shield the welding area from the atmosphere, which could cause contamination and affect the quality of the weld. Therefore, the correct term for the gas used in MIG welding is "Inert" rather than "Inner," "Insert," or "Ion."

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