NCCER Welding Level 1 Module 2: Oxyfuel Cutting Exam 2025 Questions & Answers with 100% Correct Answers | Verified

What use is oxyfuel cutting best suited for? - ferrous metals The stream of high pressure cutting oxygen that is directed from an oxyfuel torch causes to metal to instantly _____? - oxidize The recommended range of tinting for either the face shield or the safety glass lenses used during an oxyfuel cutting operation is ______? - 3-6 Most welding environment fires occur during _____? - Oxyfuel gas welding or cutting When preparing a tank or vessel that might have contained flammable materials to be cut with an oxyfuel cutting torch, the best approach is to ______? - Fill it with water or a purge gas When pure oxygen is combined with a fuel gas, it produces a ______? - A high pressure jet of cutting oxygen The most common size of oxygen cylinder used in oxyfuel cutting applications is ______? - 227 cubic feet If an acetylene cylinder is found lying on its side, what should be done before it is used? - Stand the cylinder upright and wait at least one hour The maximum hourly rate at which acetylene gas can be withdrawn from a cylinder is _____? - 1/7 of the cylinder's capacity The fuel gas that burns with the lowest flame temperature is _______. - Propane Most gas pressure regulators contain two gauges- one that indicates the cylinder pressure (upstream), and one that indicates the ______? - The pressure of the gas leaving the cylinder (downstream)