FCAW: Chapter 12 review questions by:(7th edition
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FCAW: Chapter 12 review questions by:(7th edition by Larry 
Jeffus) 
**Comparison with GMAW** 
FCAW is similar to GMAW in that it uses a constant-potential (CP) or constant-voltage (CV) power 
supply. What do these power supplies have in common? They are used in FCAW 
**Atmospheric Contamination** 
The major atmospheric contaminants of the molten weld metal are oxygen and nitrogen. What are the 
two main culprits? Oxygen and nitrogen 
**Slag Functionality** 
Slag helps an FCAW weld by...
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FCAW: Chapter 12 review questions by:(7th edition by Larry 
Jeffus) 
**Comparison with GMAW** 
FCAW is similar to GMAW in that it uses a constant-potential (CP) or constant-voltage (CV) power 
supply. What do these power supplies have in common? They are used in FCAW 
**Atmospheric Contamination** 
The major atmospheric contaminants of the molten weld metal are oxygen and nitrogen. What are the 
two main culprits? Oxygen and nitrogen 
**Slag Functionality** 
Slag helps an FCAW weld by...