Welder Red Seal · Question
What is the primary role of a voltage sensing feeder in GMAW?
A voltage sensing feeder (often found in CV power sources) adjusts the wire feed speed dynamically to maintain a constant voltage at the arc, which in turn help
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Question: What is the primary role of a voltage sensing feeder in GMAW?
Answer options: ✅ To maintain a constant arc length by adjusting wire feed speed based on voltage
- To control the flow rate of the shielding gas
- To convert AC power to DC power
- To measure the actual current flowing through the arc
Correct answer: To maintain a constant arc length by adjusting wire feed speed based on voltage
Explanation: A voltage sensing feeder (often found in CV power sources) adjusts the wire feed speed dynamically to maintain a constant voltage at the arc, which in turn helps maintain a consistent arc length even as the welder moves the gun.
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