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Quality Assurance & Process Control Flashcards

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

Read the first 7 Quality Assurance & Process Control flashcards as text

  1. Special cause variation in a process is best described as:

    Answer: Variation from identifiable, non-random sources that can be eliminated

    Special cause variation arises from specific, identifiable sources outside the normal process and can be eliminated by finding and addressing the root cause.

  2. A quality engineer notices the process average has shifted but the range chart remains in control. The correct action is to:

    Answer: Investigate the X-bar chart out-of-control signal for an assignable cause

    An out-of-control signal on the X-bar chart requires investigation for an assignable cause even when the R chart remains stable.

  3. Which tool would best help a team prioritize which defects to address first based on frequency?

    Answer: Pareto chart

    A Pareto chart ranks defects or problems by frequency, visually identifying the vital few causes that account for most of the problems.

  4. In statistical process control, control limits are typically set at:

    Answer: ±3 standard deviations from the process mean

    Standard control limits are placed at ±3 sigma (standard deviations) from the process mean, capturing 99.73% of natural process variation.

  5. A supplier sends a batch of components with a Certificate of Conformance (CoC). This document:

    Answer: States the supplier's claim that the product meets specified requirements

    A CoC is a supplier declaration stating the materials or components conform to specified requirements, but it does not guarantee zero defects.

  6. The purpose of conducting a First Article Inspection (FAI) is to:

    Answer: Verify the first production part meets all design and specification requirements before full production

    FAI validates that the production process can produce a part that meets all engineering design and specification requirements before committing to full production.

  7. When a process has a Cpk value of 1.33, it indicates:

    Answer: The process is capable with good margin from specification limits

    A Cpk of 1.33 is a commonly accepted minimum for capable processes, meaning the process has adequate margin from specification limits.