Air Carbon Arc Cutting and Gouging

The A-CAC process can be used in _____.

• all positions on any metal that will conduct electricity

• all positions on any material

• the 1G-rotated position on aluminum only

• the 2G, 5G, and 6G positions on carbon steel and its alloys only

A primary purpose of the A-CAC process is to _____.

• gouge weld grooves and prepare cracks for welding

• weld carbon steel pipes

• cut nonmetal materials such as ceramics

• create V-groove welds on carbon steel plate

To blow molten metal away, the A-CAC process uses jets of _____.

• carbon dioxide

• nitrogen

• compressed air

• extremely hot plasma

. The currents used with A-CAC electrodes compared to shielded metal arc welding (SMAW) electrodes of the same size are _____.

• much lower

• much higher

• slightly higher

• slightly lower

The preferred power source for a A-CAC torch is a(n) _____.

• AC constant-voltage machine

• DC constant-current machine

• AC or DC constant-voltage machine

• DC constant-voltage machine

To ensure that molten metal is blown away from the cut, the A-CAC operator should set the air pressure regulator to _____.

• the highest pressure possible

• 20 psig (1.38 bars)

• 150 psig (10.3 bars)

• the lowest pressure that will reliably do the job

The three basic types of A-CAC electrode types are copper-coated for direct current, copper-coated for alternating current, and _____.

• plain

• ow-alloy steel flux cored

• stainless steel flux cored

• nickel-coated

Flat electrodes are sized by _____.

• length

• the width of their widest side

• the area of their cross section

• voltage

When comparing the lens shade used for A-CAC processes to those chosen for welding on the same thickness of material, the lens for A-CAC cutting should be _____.

• darker

• lighter

• the same

• clear

. The connecting cable of the A-CAC torch contains _____.

• an electrical cable only

• both an electrical cable and a compressed air hose

• a compressed air hose only

• both an electrical cable and a water-filled tube