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Gas metal arc welding: Quiz


Question 1: Welders are also often exposed to dangerous gases and ________ matter.
ParticulateGlobal dimmingAcid rainAir pollution

Question 2: There, the method is often used for arc spot welding, thereby replacing ________ or resistance spot welding.

Question 3: Two of the most prevalent quality problems in GMAW are dross and ________.
PorosityHydraulic conductivityPermeability (earth sciences)Water content

Question 4: The cost of inert gas limited its use in steels until several years later, when the use of semi-inert gases such as ________ became common.
Carbon cycleCarbon sinkGreenhouse gasCarbon dioxide

Question 5: Originally developed for welding ________ and other non-ferrous materials in the 1940s, GMAW was soon applied to steels because it allowed for lower welding time compared to other welding processes.

Question 6: Miller Electric has a process called ________ (Regulated Metal Deposition), Lincoln Electric sells their process called STT (Surface Tension Transfer).
WeldingGas metal arc weldingRegulated Metal DepositionWelder

Question 7: The ________ industry in particular uses GMAW welding almost exclusively.
Disc brakeVacuum servoAutomobileThrottle

Question 8: A constant voltage, direct current power source is most commonly used with GMAW, but constant current systems, as well as ________, can be used.
Alternating currentTransformerElectric currentElectric power transmission

Question 9: The principles of gas metal arc welding began to be understood in the early 1800s, after ________'s discovery of the electric arc in 1800.
William Thomson, 1st Baron KelvinHumphry DavyGeorge Biddell AiryChlorine

Question 10: Unlike welding processes that do not employ a shielding gas, such as ________, it is rarely used outdoors or in other areas of air volatility.
Oxy-fuel welding and cuttingShielded metal arc weldingGas metal arc weldingGas tungsten arc welding

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