Welding 1 Module 4 Exam 2025 Questions & Answers with 100% Correct Answers | Verified

A jet of compressed air passing through the electrode holder and its head blows the molten metal away. - (A-CAC) This (A-CAC) process can be used in _______________ on any metal that will conduct electricity, such as carbon steel, stainless steel, cast iron, and copper, as well as their alloys. - All positions It is primarily used to ___________________, ______________, ______________, and to prepare ________________. - gouge weld grooves, back-gouge welds, defective welds, cracks for welding The currents used in A-CAC electrodes are much _____________ than those required for comparably sized shielded metal arc welding electrodes. - higher Either ___________ constant current welding machines may be used to supply power to A-CAC torches, but DC welding machines are usually preferred. - AC or DC These electrodes for DC use DO NOT have a copper coating. - Plain for direct current )DC) Copper coated electrodes for DC use are THE MOST COMMON. - Copper-Coated for direct current (DC) Copper coated AC electrodes differ from copper coated DC electrodes because they contain RARE - EARTH MATERIALS that help stabilize the arc. - Copper-coated for alternating current (AC) _________ are specified by the widths of their widest side. - Flat Electrodes __________ are specified by diameter. - Round Electrodes ______________ one of the procedures to prevent fires or explosions during A-CAC work is to make sure - Carbon Arc electrode are completely dry