Red Seal Welding Practice Exam

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When GMAW welding, how is gas control regulated?

Pressure regulator
Flowmeter
Timer control
Temperature control

The correct answer is: Flowmeter

A flowmeter is used to regulate the flow of gas during GMAW welding. This is important because a constant and accurate flow of gas is needed to protect the welding area from oxygen and other contaminants. The pressure regulator and timer control are not directly involved in gas regulation for GMAW welding, and temperature control is unrelated. Using a pressure regulator may result in inconsistent gas flow and using a timer control may result in incorrect gas settings. Therefore, these options are incorrect.