Practice Test Geeks(GD&T) Geometric Dimensioning and Tolerancing Certification Practice Test
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Profile Tolerancing Applications 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 Profile Tolerancing Applications flashcards as text

  1. When a profile of a surface tolerance is applied to a curved surface, what does the tolerance zone consist of?

    Answer: Two boundaries equally disposed about the true profile surface

    The profile of a surface tolerance zone consists of two boundaries (inner and outer) equally disposed about the true profile unless otherwise specified.

  2. Which GD&T symbol is used for Profile of a Line?

    Answer: A semicircle open at the bottom

    Profile of a line is represented by a semicircle open at the bottom (like the letter D rotated).

  3. A profile tolerance applied 'all around' a part feature is indicated by:

    Answer: A circle placed at the junction of the leader line and the feature control frame

    The 'all around' symbol is a small circle placed at the bend/junction of the leader line where it meets the feature control frame.

  4. What is the primary difference between a bilateral and unilateral profile tolerance zone?

    Answer: Bilateral distributes the tolerance equally on both sides; unilateral places it entirely on one side of the true profile

    A bilateral profile tolerance distributes the zone equally on both sides of the true profile, while a unilateral tolerance places the entire zone on one side.

  5. When profile of a surface is used without a datum reference, it controls:

    Answer: Only the form (shape) of the surface

    Without a datum reference, profile of a surface controls only the form of the feature, not its location or orientation.

  6. The 'all over' application of a profile tolerance means the tolerance applies:

    Answer: To all surfaces of the entire 3D part

    Profile tolerance 'all over' applies to every surface of the entire three-dimensional part, indicated by two concentric circles on the leader line.

  7. In GD&T, a profile tolerance that references three datums (A, B, C) controls which combination of characteristics?

    Answer: Form, orientation, and location

    When a profile tolerance references three datums, it controls form, orientation, and location of the surface relative to the datum reference frame.