Practice Test Geeks(GD&T) Geometric Dimensioning and Tolerancing Certification Practice Test
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Composite Feature Control Flashcards

7 cards from real GD&T 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. In a composite profile callout, the lower-segment tolerance zone is described as a uniform-width band. This band is allowed to:

    Answer: Translate and/or rotate relative to the true profile, within limits set by the upper segment

    The lower-segment profile tolerance zone can translate and rotate relative to the true profile position, but it must remain entirely within the upper-segment tolerance zone.

  2. A designer specifies composite position with PLTZF ⌀0.5 and FRTZF ⌀0.5. What is the practical effect?

    Answer: The FRTZF has no additional restraint beyond the PLTZF

    When PLTZF and FRTZF have equal values, the lower segment provides no additional tightening of feature-to-feature relationships beyond what the upper segment already requires.

  3. Under ASME Y14.5, a composite feature control frame is distinguished from a two single-segment frame by:

    Answer: The composite frame uses one geometric characteristic symbol spanning both rows

    A composite frame has a single geometric characteristic symbol (e.g., position circle) that extends vertically across both rows, while a two single-segment frame repeats the symbol in each row independently.

  4. For a composite position callout, which statement about the FRTZF zone orientation is correct when datum A (a flat surface) is the only FRTZF datum?

    Answer: The FRTZF zones must remain perpendicular to datum A but may translate in X and Y

    With only datum A (primary flat surface) in the FRTZF, the zones must remain perpendicular to A (orientation locked) but can translate freely in X and Y within the PLTZF boundaries.

  5. A part drawing shows composite position with PLTZF ⌀0.8|A|B|C and FRTZF ⌀0.3|A|B|C. This is functionally equivalent to:

    Answer: Two single-segment callouts of ⌀0.8|A|B|C and ⌀0.3|A|B|C

    When all three datums appear in both segments of a composite frame, it is functionally equivalent to two single-segment position callouts because the FRTZF is fully constrained with no freedom to translate or rotate.

  6. Which of the following is a valid reason to choose composite tolerancing over a tighter single position tolerance?

    Answer: To allow more variation in pattern location relative to datums while ensuring parts assemble correctly with mating features

    Composite tolerancing allows a loose location tolerance for assembly into a housing while maintaining tight feature-to-feature spacing needed for mating with a bolt pattern, optimizing manufacturability.

  7. When applying composite position to a non-circular pattern (e.g., rectangular slots), the FRTZF tolerance zones are:

    Answer: Shaped to match the tolerance zone type appropriate for the feature (e.g., width zones for slots)

    For slot patterns, the FRTZF tolerance zones are parallel-plane (width) zones that match the center-plane geometry of the slots, not cylindrical zones.