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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Which of the following processes does not involve the use of an electrical arc?

Flux-cored arc welding (FCAW)
Gas tungsten arc welding (GTAW)
Oxy-fuel welding
Shielded metal arc welding (SMAW)

The correct answer is: Flux-cored arc welding (FCAW)

Flux-cored arc welding (FCAW) and gas tungsten arc welding (GTAW) both use an electrical arc to heat the base material and filler metal for joining. Shielded metal arc welding (SMAW) also uses an electrical arc as it is struck between the electrode and the base material. The only process that does not involve the use of an electrical arc is oxy-fuel welding. This process uses a flame to heat and melt the base metal and filler material instead of an electrical arc.