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Fundamentals Tech Flashcards

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

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  1. Which welding position is designated as 'overhead' per AWS terminology?

    Answer: 4G

    The 4G position designates overhead groove welding per AWS classification.

  2. What is the primary purpose of a preheat in welding?

    Answer: Reduce hydrogen cracking risk

    Preheat slows the cooling rate and allows hydrogen to diffuse out, reducing the risk of hydrogen-induced cracking.

  3. A welder qualification test using a 1-inch plate in the 3G position qualifies the welder for which plate thicknesses?

    Answer: 3/16 in. to 2 in.

    Per AWS D1.1, a 1-inch test plate in 3G qualifies from 3/16 inch up to 2 inches maximum.

  4. What type of current is typically used with SMAW electrodes classified as EXX10?

    Answer: DCEP (reverse polarity)

    EXX10 electrodes require DCEP (electrode positive) to operate correctly with their cellulosic flux coating.

  5. When measuring arc voltage, where should the measurement be taken?

    Answer: As close to the arc as possible

    Arc voltage must be measured as close to the arc as possible to account for cable resistance losses.

  6. Which discontinuity is most likely to result from excessive travel speed in GMAW?

    Answer: Incomplete fusion

    Excessive travel speed reduces heat input and can cause the weld metal to freeze before fusing properly with the base metal.

  7. What does the 'F' number system classify in AWS welding procedures?

    Answer: Filler metal groupings for welder qualification

    F-numbers group filler metals by usability characteristics so that qualification with one filler qualifies for all lower F-number fillers.