Practice Test Geeks(WCL) Welding Certification Los Angeles Practice Test
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Inspection & Quality Control Flashcards

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

Read the first 7 Inspection & Quality Control flashcards as text

  1. Which type of weld discontinuity is most detrimental to fatigue life?

    Answer: Cracks

    Cracks are the most detrimental weld discontinuity for fatigue life because their sharp tips act as severe stress concentrators that propagate rapidly under cyclic loading.

  2. When a welder's qualification test is failed, AWS D1.1 requires the welder to:

    Answer: Retest immediately or after practice with the right to retest twice more

    AWS D1.1 allows an immediate retest or retest after additional practice; if the second test also fails, additional practice and approval are required before a third attempt.

  3. What does 'discontinuity' mean in the context of weld inspection, as distinguished from a 'defect'?

    Answer: A discontinuity is a deviation from ideal; a defect is a discontinuity that exceeds acceptance criteria

    A discontinuity is any interruption in the typical structure of a weld, while a defect is a discontinuity that exceeds the acceptance criteria of the applicable code and is therefore rejectable.

  4. Liquid penetrant testing (PT) is limited to detecting:

    Answer: Surface-breaking discontinuities only

    Liquid penetrant testing can only detect discontinuities that are open to the surface because the penetrant must enter the defect by capillary action.

  5. What is the function of the 'Certified Welding Inspector' (CWI) designation issued by AWS?

    Answer: Certifies the holder has the knowledge to inspect welds to code requirements

    The AWS CWI credential certifies that the individual has demonstrated the knowledge and skills required to inspect welds in accordance with applicable codes and standards.

  6. In welding, what is 'overlap' (cold lap)?

    Answer: Weld metal that protrudes beyond the weld toe without fusing to the base metal

    Overlap is weld metal that extends beyond the weld toe or root and lies on the base metal surface without fusing to it, creating a mechanical notch.

  7. Which element in the weld environment most commonly causes hydrogen-induced cracking?

    Answer: Moisture in consumables or on base metal

    Moisture (H₂O) is the primary source of hydrogen in welding; it decomposes in the arc and allows atomic hydrogen to diffuse into the weld metal, causing cracking.