NCCER welding level 1 module 4 (air-carbon arc cutting gouging) ehove exam with 100% correct answers

To gouge weld grooves, to back-gouge welds, and to gouge out defective welds One of the primary uses for air-carbon arc cutting (A-CAC) is___. 6" (15 cm) When the electrode is gripped in the torch handle, the electrode tip should be no further from the heads than ___. A rare-earth metal Electrodes designed for A-CAC use are copper coated and contain an arc-stabilizing ingredient referred to as ___. That the carbon arc electrodes to be used are completely dry. One of the procedures to prevent fires or explosions during A-CAC work is to make sure ___. The power conductor An A-CAC concentric system has compressed air passing through ___. By removing objects and projections from the surface Washing is a process used to prepare the surface of the base metal ____. It may be possible to replace only the damaged portion If an electrode holder becomes cracked or worn, ___. Carbon-graphite Electrode to melt the base metal The A-CAC Process uses a high-current electric arc between the base metal and the end of a(n) ___. Molten metal away from the cut An A-CAC Torch requires compressed air to blow the ___. Between the electrode and the base metal surface When cutting and gouging with a A-CAC Equipment, the jet orifices of the torch head(s) should be located ___. 6" (15 cm) To prevent overheating, the electrode tip to the V-groove head should be no farther than___. 200A Welding machine Light-duty gouging or cutting is typically done with a ___. 50 cfm (1,416 lpm) Heavy-duty cutting can require a torch airflow rate up to ___. End of the torch cable Compressed air is supplied to the torch through a hose attached to a fitting on the ___. Arc-stabilizing metal Electrodes designed for A-CAC contain a rare-earth, ___. Round electrode The most common style of an A-CAC electrode used for manual cutting o gouging is the ___. Size of the electrode When performing A-CAC cutting or gouging, the minimum groove width is controlled by the ___. 55° to the base metal surface To wash a projection from the metal surface using A-CAC equipment, the electrode is typically used at a push angle of about ___. One Direction Torches with special washing heads in which the air jet orifices are located on only one side of the electrode are limited to cutting from ___. Travel angle and speed In A-CAC gouging, groove depth is influenced by the electrode ___. Hard, brittle zones and porosity Dross or carbon deposits left on a surface to be welded will combine with the base metal to form ___, Oxidize To combine with oxygen, such as in burning or rusting (corrosion), is to ___. Carbon-graphite electrode A mixture of soft amorphous carbon and hard graphite carbon, possibly coded in copper, are ingredients for a(n) ___. Concentric cable system A unique combi