GMAW Test Study Guide Exam Questions
And Answers
What does GMAW stand for? - - -
correct answer ✅Gas Metal Arc Welding
What is another term for GMAW (and what does it stand for)? - - -
correct answer ✅MIG - Metal Inert Gas
What type of current is used for GMAW? - - -
correct answer ✅DC+ and DC-
What is the meaning for Single Phase? - - -
correct answer ✅1 wave and is unstable
What is the meaning for Three Phase? - - -
correct answer ✅3 waves and is stable.
What is the meaning for Open Circuit Voltage Welding? - - -
correct answer ✅machine turned on but not welding
What describes Short Circuit Transfer? - - -
correct answer ✅welding heat is produced when an electrical arc
flows from the wire to the work piece
,GMAW Test Study Guide Exam Questions
And Answers
What are the stages of Short Circuit Transfer? - - -
correct answer ✅1 - electrode wire short circuits to base metal.
2 - Magnetic field begins pinching wire.
3 - Wire separates.
4 - Arc heat flattens out the weld puddle.
5 - Wire approaches the weld puddle again.
It sounds like frying bacon.
What are the advantages and disadvantages of Short Circuit
Transfer? - - -
correct answer ✅Advantages: Low voltage, amperage and wire
feed speeds, all position welding.
Disadvantages: Lack of fusion on thick metals, more spatter than
spray modes.
What describes Globular Transfer? - - -
correct answer ✅Transfers large globs into the weld puddle.
What are the advantages and disadvantages of Globular Transfer? -
--
, GMAW Test Study Guide Exam Questions
And Answers
correct answer ✅Advantages: Can use CO2 shielding gas which is
cheaper.
Disadvantages: Produces considerable spatter, requires very precise
settings, limited applications.
What describes Spray Transfer? - - -
correct answer ✅Transfers a continuous stream of tiny molten
drops across the arc
What are the advantages and disadvantages of Spray Transfer? - - -
correct answer ✅Advantages: Good depositions rate and
penetration, very little spatter, uses larger diameter wire.
Disadvantages: Not for thin metals, travel speed critical, for open
root welds.
What describes Pulsed Spray Transfer? - - -
correct answer ✅Transfer of tiny molten drops across the arc is
pulsed to allow weld puddle cooling
What are the advantages and disadvantages of Pulsed Spray
Transfer? - - -
And Answers
What does GMAW stand for? - - -
correct answer ✅Gas Metal Arc Welding
What is another term for GMAW (and what does it stand for)? - - -
correct answer ✅MIG - Metal Inert Gas
What type of current is used for GMAW? - - -
correct answer ✅DC+ and DC-
What is the meaning for Single Phase? - - -
correct answer ✅1 wave and is unstable
What is the meaning for Three Phase? - - -
correct answer ✅3 waves and is stable.
What is the meaning for Open Circuit Voltage Welding? - - -
correct answer ✅machine turned on but not welding
What describes Short Circuit Transfer? - - -
correct answer ✅welding heat is produced when an electrical arc
flows from the wire to the work piece
,GMAW Test Study Guide Exam Questions
And Answers
What are the stages of Short Circuit Transfer? - - -
correct answer ✅1 - electrode wire short circuits to base metal.
2 - Magnetic field begins pinching wire.
3 - Wire separates.
4 - Arc heat flattens out the weld puddle.
5 - Wire approaches the weld puddle again.
It sounds like frying bacon.
What are the advantages and disadvantages of Short Circuit
Transfer? - - -
correct answer ✅Advantages: Low voltage, amperage and wire
feed speeds, all position welding.
Disadvantages: Lack of fusion on thick metals, more spatter than
spray modes.
What describes Globular Transfer? - - -
correct answer ✅Transfers large globs into the weld puddle.
What are the advantages and disadvantages of Globular Transfer? -
--
, GMAW Test Study Guide Exam Questions
And Answers
correct answer ✅Advantages: Can use CO2 shielding gas which is
cheaper.
Disadvantages: Produces considerable spatter, requires very precise
settings, limited applications.
What describes Spray Transfer? - - -
correct answer ✅Transfers a continuous stream of tiny molten
drops across the arc
What are the advantages and disadvantages of Spray Transfer? - - -
correct answer ✅Advantages: Good depositions rate and
penetration, very little spatter, uses larger diameter wire.
Disadvantages: Not for thin metals, travel speed critical, for open
root welds.
What describes Pulsed Spray Transfer? - - -
correct answer ✅Transfer of tiny molten drops across the arc is
pulsed to allow weld puddle cooling
What are the advantages and disadvantages of Pulsed Spray
Transfer? - - -
