Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
MIG - - -
correct answer ✅Metal Inert Gas another name for GMAW
MIG - - -
correct answer ✅Extremely versatile and suitable for almost all
commercial metal thickness. Can be used to join carbon steels, high
strength, low alloy steels, stainless steels, aluminum alloys,
magnesium alloys, copper alloys, and nickel alloys.
Principles of Operation - - -
correct answer ✅An electric arc is drawn between a metal
electrode and base metal. The heat melts the end of the electrode
wire and an area of base metal. The arc and the motel weld puddle
are protected by a flow of shielding gas.
Principles of Operation - - -
correct answer ✅
,Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
GMAW Components - - -
correct answer ✅•DC power source to supply the current.
GMAW Components - - -
correct answer ✅•Welding gun with hose and cables to direct the
filler wire, electrical current and gas.
GMAW Components - - -
correct answer ✅•Wire feed mechanism with contractor and
controls to deliver the wire at the required speed.
GMAW Components - - -
correct answer ✅A shielding gas system, including hoses and
flowmeter to protect thea rc and metal.
GMAW Components - - -
correct answer ✅•A Continuous bare electrode filler wire fed
through the wire feeder electrode gun
GMAW Components - - -
correct answer ✅
,Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
Power for GMAW - - -
correct answer ✅Normally uses DC electrode positive polarity
Power Source - - -
correct answer ✅Normally coupled to with the wire feed unit
provide automatic self regulation of the arc length. In this set up
the ________ ______ is a constant voltage machine and the wire
feed unit is a constant speed type.
Power Source - - -
correct answer ✅Alternative combination uses a constant-current
power source with a voltage-controlled wire feed unite. Becoming
more widely used, particularly for aluminum.
With this set up changes in voltage (prompted by changes in arc
length) initiate increase or decreases in the wire-feed speed sp that
the correct arc length and constant voltage are maintained.
, Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
Configuration - - -
correct answer ✅There are many variations, in some set ups the
power source and wire feeder may be combined while in smaller
units, the wire spool may be included in the welding gun. For high
production set ups the wire feeder is nearly always a separate unit.
Advantages of GMAW - - -
correct answer ✅Very clean process with no welding slag and
spatter is minimal.
Advantages of GMAW - - -
correct answer ✅The wedl surface is smooth and has a good
appearance keeping post weld cleanup to a minimum.
Advantages of GMAW - - -
correct answer ✅Wire costs are reduced because there is no
electrode stub loss as there is with SMAW.
Advantages of GMAW - - -
correct answer ✅Has a very high deposit efficiency in GMAW 92-
(GMAW) Exam Questions And Answers
MIG - - -
correct answer ✅Metal Inert Gas another name for GMAW
MIG - - -
correct answer ✅Extremely versatile and suitable for almost all
commercial metal thickness. Can be used to join carbon steels, high
strength, low alloy steels, stainless steels, aluminum alloys,
magnesium alloys, copper alloys, and nickel alloys.
Principles of Operation - - -
correct answer ✅An electric arc is drawn between a metal
electrode and base metal. The heat melts the end of the electrode
wire and an area of base metal. The arc and the motel weld puddle
are protected by a flow of shielding gas.
Principles of Operation - - -
correct answer ✅
,Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
GMAW Components - - -
correct answer ✅•DC power source to supply the current.
GMAW Components - - -
correct answer ✅•Welding gun with hose and cables to direct the
filler wire, electrical current and gas.
GMAW Components - - -
correct answer ✅•Wire feed mechanism with contractor and
controls to deliver the wire at the required speed.
GMAW Components - - -
correct answer ✅A shielding gas system, including hoses and
flowmeter to protect thea rc and metal.
GMAW Components - - -
correct answer ✅•A Continuous bare electrode filler wire fed
through the wire feeder electrode gun
GMAW Components - - -
correct answer ✅
,Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
Power for GMAW - - -
correct answer ✅Normally uses DC electrode positive polarity
Power Source - - -
correct answer ✅Normally coupled to with the wire feed unit
provide automatic self regulation of the arc length. In this set up
the ________ ______ is a constant voltage machine and the wire
feed unit is a constant speed type.
Power Source - - -
correct answer ✅Alternative combination uses a constant-current
power source with a voltage-controlled wire feed unite. Becoming
more widely used, particularly for aluminum.
With this set up changes in voltage (prompted by changes in arc
length) initiate increase or decreases in the wire-feed speed sp that
the correct arc length and constant voltage are maintained.
, Introduction to Gas Metal Arc Welding
(GMAW) Exam Questions And Answers
Configuration - - -
correct answer ✅There are many variations, in some set ups the
power source and wire feeder may be combined while in smaller
units, the wire spool may be included in the welding gun. For high
production set ups the wire feeder is nearly always a separate unit.
Advantages of GMAW - - -
correct answer ✅Very clean process with no welding slag and
spatter is minimal.
Advantages of GMAW - - -
correct answer ✅The wedl surface is smooth and has a good
appearance keeping post weld cleanup to a minimum.
Advantages of GMAW - - -
correct answer ✅Wire costs are reduced because there is no
electrode stub loss as there is with SMAW.
Advantages of GMAW - - -
correct answer ✅Has a very high deposit efficiency in GMAW 92-
