Oxyfuel Cutting Exam Q&A 100% Pass
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
1
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.
, 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withdrawn from a cylinder is _____?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)
Oxyfuel cutting equipment that has left hand threads and a V-
notch in the nut are most likely to be ______? - ✔✔Fuel gas
fittings
2
©NINJANERD 2025/2026. YEAR PUBLISHED 2025.