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GMAW REVIEW EXAM QUESTIONS AND ANSWERS
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GMAW REVIEW EXAM QUESTIONS AND ANSWERS...
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GMAW REVIEW EXAM QUESTIONSAND ANSWERS
active gas - ANSWER A gas that reacts with other elements. GMAW uses
both active and inactive gas as shielding.
American Welding Society - ANSWER The non-profit society that regulates
the industrial standards for welding and promotes the welding industry.
amperage - ANSWER A measurement which shows the quantity of current
flowing in a circuit measured in amperes. GMAW _____ is measured by wire
speed.
argon - ANSWER An inactive gas, used commonly as shielding. _____ is
much heavier than air, thus it effectively shields the weld area.
carbon dioxide- ANSWER An active gas commonly used as shielding for
GMAW. ____ ______is inexpensive but yields a violent arc.
carbon steel- ANSWER A steel that consists of iron and carbon, without any
additional materials.
constant voltage welder- ANSWER A welding machine that maintains a
constant voltage setting while compensating for changes in amperage.
, consumable electrode ANSWER An electrode that conducts electricity to the
arc but also melts into the weld as a filler metal.
contact tip ANSWER The device inside a welding gun that conducts electricity
to the electrode. The _____ ___ is usually made of copper.
corrosion resistance ANSWER A metal's ability to resist attack by other
elements and chemicals.
crater - ANSWER An unwanted depression in the weld bead. A _____ can
cause cracking if it is not properly filled.
cylinder pressure gauge - ANSWER The instrument showing the quantity of
shielding gas available in the gas cylinder.
DCEP - ANSWER An abbreviation for direct current electrode positive. _____
is another way of describing direct current with reverse polarity.
deoxidizer - ANSWER A substance that removes oxygen from the molten
weld puddle and arc. Oxygen can ruin a weld bead.
deposition rate - ANSWER The amount of an electrode that melts into the
molten weld puddle to form a weld.
drag angle - ANSWER An industrial term referring to the backhand technique.
ductility - ANSWER The ability of a metal to be drawn, stretched, or otherwise
formed without breaking.
duty cycle - ANSWER The number of minutes in a ten-minute period during
which an electrical device can operate and perform work without overheating. If
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