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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During MIG welding, which type of current is generally used?

AC
DC
High frequency
Low frequency

The correct answer is: AC

During MIG (Metal Inert Gas) welding, direct current (DC) is generally used. DC current flows in one direction and is ideal for creating a stable arc during welding. This type of current allows for better control over the welding process and produces consistent results. Alternating current (AC) periodically changes direction, which can lead to a less stable arc and potential issues during welding. High frequency and low frequency currents are not typically used in MIG welding processes.