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Fundamentals 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. A Welding Procedure Specification (WPS) must be supported by:

    Answer: A Procedure Qualification Record (PQR)

    The PQR documents the actual test results from welding a test coupon to confirm the WPS parameters produce welds with acceptable mechanical properties.

  2. Which type of weld joint is formed when two members lie in the same plane and their edges are joined?

    Answer: Butt joint

    A butt joint connects two members that lie approximately in the same plane with their edges joined along the seam.

  3. When hydrogen-induced cracking (HIC) is a concern, which electrode storage practice is most important?

    Answer: Keeping low-hydrogen electrodes in a heated oven before use

    Low-hydrogen electrodes must be stored in a holding oven at the manufacturer-specified temperature (typically 250–300°F) to prevent moisture absorption that leads to HIC.

  4. What does the 'F number' classification of a filler metal indicate in ASME and AWS qualification codes?

    Answer: A grouping of filler metals with similar usability characteristics for welder qualification

    F numbers group filler metals by usability characteristics so that a welder qualified with one filler metal in the group is qualified for others in the same group.

  5. An inspector measures a fillet weld and finds its actual throat is larger than specified. This condition is known as:

    Answer: Excessive convexity

    Excessive convexity means the weld face profile projects too far outward, resulting in a larger-than-required actual throat and wasted weld metal.

  6. Which of the following best describes 'interpass temperature' in a multi-pass weld?

    Answer: The temperature of the weld metal at the start of each successive pass

    Interpass temperature is the temperature of the previously deposited weld bead (and adjacent base metal) just before the next pass is started.

  7. In ultrasonic testing (UT) of welds, what does a 'transducer' do?

    Answer: Converts electrical energy into ultrasonic sound waves and vice versa

    A transducer (probe) converts electrical pulses into high-frequency sound waves directed into the material and converts returning echoes back into electrical signals for display.