Practice Test Geeks(CPT) Certified Production Technician Practice Test
← All CPT Flashcard Decks

Measurement & Calibration 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 Measurement & Calibration flashcards as text

  1. A technician notices the zero on a micrometer does not line up when the anvil and spindle are closed. The BEST corrective action is to:

    Answer: Use the adjustment wrench to re-zero the micrometer before measuring

    Most micrometers have a built-in zero adjustment; re-zeroing before use corrects the offset and eliminates the need to manually apply a correction factor.

  2. In SPC (Statistical Process Control), the control chart is used alongside measurement data. Which measurement property must be validated before SPC data is meaningful?

    Answer: The measurement system's variation is small relative to the process variation (adequate MSA)

    If measurement system variation is large relative to process variation, the control chart will reflect measurement noise rather than true process behavior, making it unreliable.

  3. A feeler gage (thickness gage) set is being used to measure a gap of approximately 0.015 inches. The technician should select a blade that:

    Answer: Slides into the gap with a slight drag, indicating the correct size

    Correct feeler gage technique requires selecting a blade that slides in with a slight resistance (drag) — this indicates the blade matches the gap dimension.

  4. Which of the following statements about calibration records is MOST accurate?

    Answer: Calibration records must document the as-found and as-left conditions of the instrument

    Calibration records must capture both the as-found condition (before adjustment) and the as-left condition (after adjustment) to provide a complete history of the instrument's performance.

  5. A production line uses digital calipers that are dropped frequently. Which calibration check should be performed most frequently for these instruments?

    Answer: Zero and span verification before use

    Instruments subject to rough handling should be verified at zero and at a known reference dimension (span) before each use to detect damage-related errors.

  6. When measuring a cylindrical part for roundness (circularity), the technician takes measurements at multiple angular positions around the part. Why?

    Answer: To detect out-of-round conditions that a single-point measurement would miss

    A single-point diameter measurement cannot detect lobing or ovality; multiple angular measurements reveal whether the part cross-section deviates from a true circle.

  7. A torque wrench used in final assembly must be calibrated. The calibration standard used is a torque analyzer with a stated accuracy of ±0.5%. The torque wrench being calibrated has a tolerance of ±4%. This calibration setup:

    Answer: Meets the 4:1 TAR requirement since 4% ÷ 0.5% = 8:1 ratio

    The TAR is 4% ÷ 0.5% = 8:1, which exceeds the minimum 4:1 requirement, making this calibration setup valid.