Welder Red Seal · Question
What is a potential negative consequence of using an excessive 'electrode extension' or 'stickout' in the FCAW or GMAW processes?
An overly long electrode extension causes significant resistive heating in the wire. This can pre-melt the flux or reduce the current density at the arc, leadin
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Question: What is a potential negative consequence of using an excessive 'electrode extension' or 'stickout' in the FCAW or GMAW processes?
Answer options:
- Excessive spatter and an unstable arc
- Increased risk of electric shock to the operator ✅ Reduced penetration and potential for porosity
- A decrease in deposition rate
Correct answer: Reduced penetration and potential for porosity
Explanation: An overly long electrode extension causes significant resistive heating in the wire. This can pre-melt the flux or reduce the current density at the arc, leading to poor penetration, and can disrupt the gas shield, causing porosity.
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Question explanations
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