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Quality Control & Reliability Engineering Flashcards

7 cards from real CPE 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 Control & Reliability Engineering flashcards as text

  1. What is the primary goal of a Failure Mode and Effects Analysis (FMEA)?

    Answer: To proactively identify potential failure modes and their effects before they occur

    FMEA is a proactive risk assessment tool used to identify potential failure modes, assess their effects and severity, and prioritize corrective actions before failures occur.

  2. In an FMEA, the Risk Priority Number (RPN) is calculated as the product of which three factors?

    Answer: Severity, Occurrence, and Detection

    RPN = Severity × Occurrence × Detection; each factor is rated on a 1–10 scale, and higher RPNs indicate higher-priority failure modes requiring immediate corrective action.

  3. What is the primary objective of Reliability-Centered Maintenance (RCM)?

    Answer: To select the most effective maintenance strategy for each failure mode based on its consequences

    RCM systematically determines the most applicable and cost-effective maintenance strategy for each component and failure mode based on safety, operational, and economic consequences.

  4. A p-chart in statistical process control is used to monitor which type of data?

    Answer: The proportion of nonconforming units in a sample

    A p-chart monitors the proportion (fraction) of nonconforming items in subgroups of varying or fixed sample sizes, making it appropriate for attribute data.

  5. What does the fishbone (Ishikawa) diagram help quality engineers identify?

    Answer: The root causes of a problem organized by category

    A fishbone diagram visually maps potential root causes of a problem into categories (commonly: Man, Machine, Method, Material, Measurement, Environment) to support root cause analysis.

  6. Mean Time To Repair (MTTR) is best described as:

    Answer: The average time required to restore a failed system to operational status

    MTTR is the average time needed to repair and restore a failed system, including diagnosis, repair, and verification; it directly reflects maintainability.

  7. In acceptance sampling, what does the Acceptable Quality Level (AQL) represent?

    Answer: The worst acceptable process average of defectives that is still satisfactory to the consumer

    AQL is the maximum percent defective (or defects per hundred units) that can be considered satisfactory as a process average for acceptance sampling purposes.