GMAW chapter 4 questions well answered to pass

GMAW chapter 4 questions well
answered to pass

Gases are used in GMAW to _ the electrode and the weld pool from the atmosphere, _ heat from the
electrode to metal _ the arc pattern,_ in controlling bead contour and penetration, _ in metal transfer
from the electrode and _ in the cleaning action of the base material. - correct answer ✔✔shield,
transfer, stabilize, aid, assist, assist



Two inert gases used in the GMAW process are _ and _ - correct answer ✔✔argon & helium



Two gases used in the GMAW process that are not inert are _ and _ - correct answer ✔✔oxygen &
carbon dioxide



_ is always used as a part of a gas combination, not as a single gas. - correct answer ✔✔oxygen



Argon gas is _ than air and tends to form a blanket around the molten weld pool - correct answer
✔✔Heavier



_ gas is lighter than air and requires higher flow rates than argon - correct answer ✔✔Helium



Carbon Dioxide is a manufactured gas made by combining _ and _ - correct answer ✔✔Carbon
Monoxide & oxygen



only _ carbon dioxide can be used in the GMAW process - correct answer ✔✔welding grade



when used alone _ gas is used primarily on nonferrous materials - correct answer ✔✔Argon



when used alone _ gas is primarily used on carbon steel - correct answer ✔✔carbon dioxide