GMAW And FCAW Welding Fundamentals Questions And Answers Graded A+
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Module
GMAW And FCAW Welding Fundamentals
Institution
GMAW And FCAW Welding Fundamentals
GMAW And FCAW Welding Fundamentals
Questions And Answers Graded A+
Direct current electrode positive (DCEP) is also called...☑️Correct Ans-Direct current
reverse polarity. (DCRP)
Current used in GMAW welding.☑️Correct Ans-Direct current electrode positive (reverse
polarity). Direct ...
GMAW And FCAW Welding Fundamentals
Questions And Answers Graded A+
Direct current electrode positive (DCEP) is also called...☑️Correct Ans-Direct current
reverse polarity. (DCRP)
Current used in GMAW welding.☑️Correct Ans-Direct current electrode positive (reverse
polarity). Direct current electrode negative (straight polarity) is rarely used.
What voltage supply (power supply) is used in both GMAW and FCAW?☑️Correct Ans-
Constant voltage power supply.
Wire feed speed is directly related to...☑️Correct Ans-Welding current.
What are some disadvantages of using GMAW?☑️Correct Ans-More expansive than
SMAW, weld joints can be hard to reach because of welding gun, and rapid air movement
can blow away shielding gas causing weld defects.
What current(s) is used for FCAW?☑️Correct Ans-Depending on the electrode being used,
both DCEP and DCEN can be used.
GMAW☑️Correct Ans-Gas Metal Arc Welding
FCAW☑️Correct Ans-Flux Cored Arc Welding
Similarities between GMAW and FCAW?☑️Correct Ans-Both use same power supply, wire
feeder and have continuously fed electrode (wire).
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, Difference between FCAW and GMAW?☑️Correct Ans-GMAW requires gas shielding.
FCAW can be used with gas shielding or without gas shielding.
What type of process is used in GMAW?☑️Correct Ans-The metals are joined by heating
them with a welding arc between a continuous consumable electrode and the base metal.
How is the atmosphere prevented from contaminating the weld?☑️Correct Ans-A shielding
gas or gas mixture is used to prevent contamination.
MIG☑️Correct Ans-metal inert gas
Consumable Electrode☑️Correct Ans-An electrode that conducts electricity to the arc but
also melts into the weld as a filler metal.
two different types of FCAW process.☑️Correct Ans-FCAW-G uses a flux which requires
additional gas shielding. FCAW-S produces its own shielding gas and does not need
additional gas shielding.
What different electrodes are used in GMAW and FCAW?☑️Correct Ans-GMAW uses a
solid metal electrode and FCAW uses a tubular electrode containing flux.
What is FCAW used to weld on?☑️Correct Ans-FCAW can only weld on ferrous and
nickel-based metals.
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