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Unit 1 (test 2)

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1.
1 point
_____ has proven to be the most efficient gas for use with plasma cutting; however _____ can be used.
2.
1 point
the high-velocity jet of ionized gas flows from a constricting orifice and removed the molten metal.
3.
1 point
when cutting aluminum and stainless steel, best results are obtained with __________ mixtures.
4.
1 point
in a plasma arc cutting torch, the top of the electrode is located within the nozzle.
5.
1 point
used to protect the eyes from light rays and heat rays. if you see spots after welding a few minutes, used a darker shade of lens.
6.
1 point
used to weld or cut heavy materials (over 3/8" T
7.
1 point
it cuts carbon steel up to 10 times faster tan oxy-fuel mixture, with equal quality and less cost.
8.
1 point
is one of the best processes for high speed cutting of nonferrous metals and stainless steels.
9.
1 point
used on medium thickness materials (up to 3/8" T)
10.
1 point
used when cutting or welding light gauge material (1/8" T or less)
11.
1 point
when matter changes from one state to another, _____ is generated. _____ is required to changed water into steam, and similarly, the plasma torch supplies energy to a gas to change it into plasma.
12.
1 point
is a cutting process that uses a constrictred arc to remove molten metal with a high-velocity jet of ionized gas.
13.
1 point
is often considered the fourth state of matter.
14.
1 point
results when a gas is heated to a high temperature and changes into positive ions, neutral atoms, and negative electrons.
15.
1 point
used by any personnel in the area of welding or cutting operations, not actually doing the cutting or welding.
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