29103-15 - Plasma Arc Cutting exam questions and answers(verified for accuracy)

Gas In PAC, plasma is created by ___________? Faster & Efficient In most cases, PAC is ___________ & more ____________ than other cutting methods. A full leather hood Which PPE is considered optional in PAC? Gas Never carry matches or _________ filled lighters in your pockets. Compressed air The simplest PAC units use filtered __________? 3" thick Industrial plasma cutting units can cut carbon steel up to ________ " thick? 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. 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 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.