GMAW Review Questions and Answers Fully Solved 100%
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GMAW
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GMAW
An inactive gas commonly used as shielding. _____ is much heavier than air, so it
effectively shields the weld area. - ️️argon
An undesirable depression in the weld bead. A _____ can cause cracking if it is not
properly filled. - ️️crater
An active gas commonly used as shielding for GMA...
GMAW Review
An inactive gas commonly used as shielding. _____ is much heavier than air, so it
effectively shields the weld area. - ✔️✔️argon
An undesirable depression in the weld bead. A _____ can cause cracking if it is not
properly filled. - ✔️✔️crater
An active gas commonly used as shielding for GMAW. ____ ______is inexpensive but
yields a violent arc. - ✔️✔️carbon dioxide
The non-profit society that regulates the industrial standards for welding and promotes
the welding industry. - ✔️✔️American Welding Society
A measurement that indicates the amount of current flowing in a circuit, which is
measured in amperes. GMAW _____ is determined by wire speed. - ✔️✔️amperage
A steel that consists of iron and carbon, without any additional materials. - ✔️✔️carbon
steel
A welding machine that maintains a constant voltage setting while compensating for
changes in amperage. - ✔️✔️constant voltage welder
A gas that reacts with other elements. GMAW uses both active and inactive gas as
shielding. - ✔️✔️active gas
An electrode that conducts electricity to the arc but also melts into the weld as a filler
metal. - ✔️✔️consumable electrode
The device located inside the welding gun that conducts electricity to the electrode. The
_____ ___ is usually made of copper. - ✔️✔️contact tip
A metal's ability to resist attack by other elements and chemicals. - ✔️✔️corrosion
resistance
The device that indicates the amount of shielding gas present in the gas cylinder. -
✔️✔️cylinder pressure gauge
An abbreviation for direct current electrode positive. _____ is another way of expressing
direct current with reverse polarity. - ✔️✔️DCEP
, A material that removes oxygen from the molten weld puddle and arc. Oxygen can ruin
a weld bead. - ✔️✔️deoxidizer
The rate at which an electrode melts into the molten weld puddle to form a weld. -
✔️✔️deposition rate
A term used in industry for the backhand technique. - ✔️✔️drag angle
A metal's ability to be drawn, stretched, or formed without breaking. - ✔️✔️ductility
The opposition to current flow. Excessive stickout causes increased _________
___________ between the electrode and workpiece. - ✔️✔️electrical resistance
An imaginary line through the center of the electrode. - ✔️✔️electrode axis
A measurement of the thickness of the electrode. GMAW has the thinnest _________
_________, which allows it to weld thin base metals. - ✔️✔️electrode diameter
The distance from the end of the contact tip to the end of the electrode. -
✔️✔️electrode extension
The insulated lining that surrounds the wire electrode and supports it from the wire
feeder to the contact tip. - ✔️✔️electrode liner
A weld that solidifies quickly. ____ ________ welds are more easily performed out-of-
position, and they reduce the risk of a leaking weld puddle. - ✔️✔️fast-freeze weld
A metal that contains iron. Steel is the most popular _________ metal. - ✔️✔️ferrous
metal
Metal deposited into the weld that often adds strength and mass to the welded joint. The
wire electrode for GMAW is the ______ ______. - ✔️✔️filler metal
Moving the electrode along the workpiece in the direction of welding. - ✔️✔️forehand
technique or push
An external device used to house shielding gas. Shielding gas flows from the ___
________, to the gas hose, to the welding gun. - ✔️✔️gas cylinder
The device inside the welding gun through which shielding gas flows. - ✔️✔️gas
diffuser
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