Dr. Muller Advanced Welding GMAW
Questions and Answers Best rated A+
Guaranteed Success Latest Update
Active gas
Correct answer: A gas that reacts with other elements. GMAW uses both active and inactive gas
as shielding.
American Welding Society
Correct answer: The non-profit society that regulates the industrial standards for welding and
promotes the welding industry.
You can use this GMAW mode on thin materials with low current
Correct answer: Globular transfer
Amperage
Correct answer: A measurement that indicates the amount of current flowing in a circuit, which
is measured in amperes. GMAW amperage is determined by wire speed.
This is measured in inches per minute or poundage per hour
Correct answer: Wire feed or wire melting rate
Argon
Correct answer: An inactive gas commonly used as shielding. Argon is much heavier than air, so
it effectively shields the weld area.
Carbon dioxide
Correct answer: An active gas commonly used as shielding for GMAW. Carbon dioxide is
inexpensive but yields a violent arc.
The _______ is the natural bend in the wire
Correct answer: Cast
Carbon steel
Correct answer: A steel that consists of iron and carbon, without any additional materials.
Distance from the tube to the arc measured along the wire length is the ___________
Correct answer: Stickout
, Constant voltage welder
Correct answer: A welding machine that maintains a constant voltage setting while
compensating for changes in amperage.
Spool drag
Correct answer: This is adjusted so that the reel stops when the feed stops.
Density
Correct answer: One of the most important characteristics of a shield gas — how much heavier
than air.
Consumable electrode
Correct answer: An electrode that conducts electricity to the arc but also melts into the weld as a
filler metal.
Slope
Correct answer: Voltage decreases as amperage increase
Contact tip
Correct answer: The device located inside the welding gun that conducts electricity to the
electrode. The contact tip is usually made of copper.
Corrosion resistance
Correct answer: A metal's ability to resist attack by other elements and chemicals.
Crater
Correct answer: An undesirable depression in the weld bead. A crater can cause cracking if it is
not properly filled.
Cylinder pressure gauge
Correct answer: The device that indicates the amount of shielding gas present in the gas
cylinder.
Mill scale
Correct answer: A form of iron oxide created during the fabrication of steel.
DCEP
Correct answer: An abbreviation for direct current electrode positive. DCEP is another way of
expressing direct current with reverse polarity.
Contact tube
Correct answer: Is responsible for electrically charging the wire electrodes when MIG welding.
Axial spray transfer mode
Correct answer: Spray transfer is named for the spray of tiny molten droplets across the arc,
similar to spray coming out of a garden hose when the opening is restricted. Spray transfer
Questions and Answers Best rated A+
Guaranteed Success Latest Update
Active gas
Correct answer: A gas that reacts with other elements. GMAW uses both active and inactive gas
as shielding.
American Welding Society
Correct answer: The non-profit society that regulates the industrial standards for welding and
promotes the welding industry.
You can use this GMAW mode on thin materials with low current
Correct answer: Globular transfer
Amperage
Correct answer: A measurement that indicates the amount of current flowing in a circuit, which
is measured in amperes. GMAW amperage is determined by wire speed.
This is measured in inches per minute or poundage per hour
Correct answer: Wire feed or wire melting rate
Argon
Correct answer: An inactive gas commonly used as shielding. Argon is much heavier than air, so
it effectively shields the weld area.
Carbon dioxide
Correct answer: An active gas commonly used as shielding for GMAW. Carbon dioxide is
inexpensive but yields a violent arc.
The _______ is the natural bend in the wire
Correct answer: Cast
Carbon steel
Correct answer: A steel that consists of iron and carbon, without any additional materials.
Distance from the tube to the arc measured along the wire length is the ___________
Correct answer: Stickout
, Constant voltage welder
Correct answer: A welding machine that maintains a constant voltage setting while
compensating for changes in amperage.
Spool drag
Correct answer: This is adjusted so that the reel stops when the feed stops.
Density
Correct answer: One of the most important characteristics of a shield gas — how much heavier
than air.
Consumable electrode
Correct answer: An electrode that conducts electricity to the arc but also melts into the weld as a
filler metal.
Slope
Correct answer: Voltage decreases as amperage increase
Contact tip
Correct answer: The device located inside the welding gun that conducts electricity to the
electrode. The contact tip is usually made of copper.
Corrosion resistance
Correct answer: A metal's ability to resist attack by other elements and chemicals.
Crater
Correct answer: An undesirable depression in the weld bead. A crater can cause cracking if it is
not properly filled.
Cylinder pressure gauge
Correct answer: The device that indicates the amount of shielding gas present in the gas
cylinder.
Mill scale
Correct answer: A form of iron oxide created during the fabrication of steel.
DCEP
Correct answer: An abbreviation for direct current electrode positive. DCEP is another way of
expressing direct current with reverse polarity.
Contact tube
Correct answer: Is responsible for electrically charging the wire electrodes when MIG welding.
Axial spray transfer mode
Correct answer: Spray transfer is named for the spray of tiny molten droplets across the arc,
similar to spray coming out of a garden hose when the opening is restricted. Spray transfer
