Practice Test Geeks(GD&T) Geometric Dimensioning and Tolerancing Certification Practice Test
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Symbols and Rules 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.

Read the first 7 Symbols and Rules flashcards as text

  1. Which GD&T symbol is used to control the orientation of a surface relative to a datum plane without controlling its location?

    Answer: Parallelism

    Parallelism controls the orientation of a surface or axis to be parallel to a datum without specifying its exact location.

  2. What does the 'S' modifier inside a feature control frame signify?

    Answer: Spherical diameter

    The 'S' prefix before a diameter symbol (Sø) indicates a spherical diameter in GD&T.

  3. Rule #2 in ASME Y14.5 states that unless otherwise specified, each tolerance of orientation, form, location, or runout applies to which condition?

    Answer: Regardless of Feature Size (RFS)

    Rule #2 (RFS) is the default condition — geometric tolerances apply regardless of actual feature size unless MMC or LMC is specified.

  4. Which symbol in a feature control frame indicates that a tolerance applies to the full surface profile, including both sides of the tolerance zone equally?

    Answer: Equal bilateral profile (no modifier)

    A profile tolerance with no modifier defaults to equal bilateral disposition, split equally inside and outside the true profile.

  5. The 'all around' symbol on a leader line in a profile tolerance callout is represented by:

    Answer: A circle at the bend of the leader line

    A circle placed at the junction of the leader line and the reference line indicates that the profile tolerance applies all around the cross-section.

  6. In GD&T, what is the purpose of the datum feature symbol (a rectangle with a triangle)?

    Answer: To identify a feature that serves as an origin for measurements

    The datum feature symbol identifies physical features on a part that establish the coordinate system used for measurements and inspections.

  7. Which of the following GD&T symbols controls both the form and the orientation of a surface with respect to a datum?

    Answer: Angularity

    Angularity controls the orientation of a surface or axis at a specified angle to a datum, inherently also controlling form within the tolerance zone.