Practice Test GeeksAWS Practice Test
← All AWS Flashcard Decks

AWS Welding Processes & Equipment Flashcards

6 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 AWS Welding Processes & Equipment flashcards as text

  1. What is 'arc blow' and which current type is most likely to cause it?

    Answer: Magnetic deflection of the arc caused by DC welding on ferromagnetic materials

    Arc blow is the deflection of the arc by magnetic fields induced in ferromagnetic materials and is most problematic with DC welding.

  2. Which shielding gas mixture is commonly used for GMAW of carbon steel to provide good penetration and reduced spatter?

    Answer: 75% Argon / 25% CO₂ (C25)

    75% Ar / 25% CO₂ (C25) is the most common gas blend for GMAW of carbon steel, balancing arc stability, penetration, and spatter levels.

  3. In SMAW, what does the last two digits (e.g., '18' in E7018) indicate?

    Answer: Usable welding positions and type of coating/current

    The last two digits in an AWS SMAW electrode designation indicate the usable welding positions and the type of flux coating and compatible current.

  4. What is the 'open circuit voltage (OCV)' of a welding machine?

    Answer: The voltage at the output terminals when the machine is energized but no welding is occurring

    OCV is the voltage present at the output terminals when the welder is on but not actively welding; it is needed to strike and re-strike the arc.

  5. Which process uses a continuously fed wire electrode inside a tube of flux, and can operate with or without external shielding gas?

    Answer: FCAW

    FCAW uses a tubular wire with flux in the core; gas-shielded (FCAW-G) uses external shielding gas, while self-shielded (FCAW-S) does not.

  6. What is the primary purpose of inductance control on a GMAW power source used for short-circuit transfer?

    Answer: Controls the rate of current rise during short circuits, affecting spatter and bead appearance

    Inductance in a GMAW machine controls how fast the current rises when the wire shorts, which directly affects spatter levels and weld bead wetness.