29103-15 - Plasma Arc Cutting test review questions fully solved 2023 update

Gas In PAC, plasma is created by ___________ in an electric arc? Faster & More Efficient In most cases, PAC is ___________ &___________ than other cutting methods. A full leather hood Which PPE is considered optional in PAC? Matches or gas filled lighters Never carry _________ or _________ _________ _______ in your pockets. Compressed air The simplest PAC units use filtered __________? 3" , 100% Industrial plasma cutting units can cut carbon steel up to ________ thick with a duty cycle of ______? Pilot arc Most common PAC torch uses _________ _______ with the transferred arc process. PAC cutting torch contains a Retaining cup, copper electrode w/ a hafnium or thoriated tungsten insert, gas swirl ring and nozzle. Standoff Distance ________________ refers to the distance between the torch tip & work piece. (between 1/16" and 1/4") Shielding or Cooling Gas Most heavy-duty PAC systems require one gas cylinder containing the cutting gas & another containing ______________? Air Compressor Some light-duty PAC equipment has a built-in _________? high-cutting amperage (appx. 250A) Cutting a 2" (5 cm) aluminum plate requires a ____________ ? 0 To pierce very thin metal using PAC, hold the torch at a ____________ degree work angel. cylinder caps When gas cylinders are disconnected from a PAC unit before it is stored, be sure to replace the __________ ? Moisture Sputtering or hissing of the torch is often caused by _____________ entering the unit through the air line. Transferred Arc & Non-transfered Arc There are two types of PAC processes they are? Part of the electrical circuit In the transferred-arc process the workpiece is ___________? The Torch In the Non-transfered arc process the entire arc is established within _______?