and Answers 100% Pass
1st° burns have occurred when the service of the skin is - ✔✔Reddish in color tender
and painful
Welding lenses are numbered according to - ✔✔Darkness
For our safety the one shade recommendation for an electric ark with the amperage of
250 to 500 is - ✔✔14
Primary current over _______________ is considered harmful - ✔✔6 MA
Exposures to fumes could cause metal fume fever, what are some symptoms for this
fever - ✔✔Allergy and flu like symptoms
Which of the following metals can be cut with the oxy fuel torch - ✔✔Carbon steel
If a cylinder of acetylene gas is found laying down, how long must remain vertical
before can be safely used - ✔✔4 hours
What is the approximate cylinder pressure on oxygen cylinder - ✔✔2,200 psi
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,What type of thread and color is oxygen associated with - ✔✔Right hand thread - green
Which of the following is an advantage for using acetylene as a fuel gas? - ✔✔It has the
highest neutral flame temperature
To what temperature must still be raised in order to properly cut it - ✔✔The meadows
kindling temperature
How does a coding such as paint on the surface affect cutting with a torch? - ✔✔The
paint should be removed to avoid residue clogging the tip
Settling is dissolved into which substance - ✔✔Acetone
There are two colors of Oxsee fuel hose what color is the acetylene hose - ✔✔Red
How are acetylene cylinders constructed - ✔✔Welded steel cylinders
What type of fitting does an acetylene regulator have - ✔✔Left handto stop reverse flow
of the gas
Which type of hose is used for alternate fuel gases - ✔✔T grade
On a manufactures tip and gas pressure chart, what does the 000 stand for - ✔✔The
diameter (drill size) of the cutting tip orifice
What is the relationship between tip size and metal thickness? - ✔✔Thicker metal
requires a larger tip orfaces
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, How does tip size affect gas pressure - ✔✔Larger orifices require higher gas pressures
Which of the following can cause flashback? - ✔✔Dirty welding/cutting tip
How does the tip connect to the torch - ✔✔With the right-hand thread tip nut
Before installing Tips in the torch head what part of the tip should be inspected - ✔✔Oh
rings and seating surfaces
Which of the following charts/graphs are used to properly set gas pressure? - ✔✔Tip
charts
The OAF process uses oxygen and what other type of gases? - ✔✔Fuel gases
At what pressure does acetylene gas become unstable - ✔✔15 psi
What is the purpose of a check valve - ✔✔To stop reverse flow of the gas
Which type of hose is use for settling fuel gases - ✔✔RM grade
How much should The acetylene valve be opened - ✔✔Open 1/2 turn
There are two types of cutting torches, one is equal pressure torch, what is the other -
✔✔Injector
One setting up the Oxsee fuel equipment, the green hose attaches to what? - ✔✔Oxygen
regulator fitting
And oxygen regulator can be used with which cylinders - ✔✔Oxygen only
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