Practice Test Geeks(GD&T) Geometric Dimensioning and Tolerancing Certification Practice Test
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Tolerances & Fits in Engineering Drawings 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. Which condition produces maximum clearance in a clearance fit?

    Answer: Smallest shaft with largest hole

    Maximum clearance occurs when the shaft is at its smallest (LMC) and the hole is at its largest (LMC), giving the most play.

  2. A drawing note states 'ALL TOLERANCES ±0.005 UNLESS OTHERWISE SPECIFIED.' A dimension shown as 3.750 +0.010/−0.000 would have which tolerance applied?

    Answer: +0.010/−0.000 as shown on the dimension

    A specific tolerance shown on a dimension always overrides the general title block tolerance for that particular feature.

  3. What is the purpose of using a running and sliding fit (RC fit) classification in ANSI B4.1?

    Answer: To provide controlled clearance for parts that move relative to each other

    RC (Running and Clearance) fits are designed to provide controlled clearance allowing relative motion between assembled parts.

  4. When converting between unilateral and bilateral tolerance expressions, a dimension of 25.00 +0.06/−0.00 is equivalent to:

    Answer: 25.03 ± 0.03

    The midpoint is 25.00 + 0.03 = 25.03, and the equal bilateral deviation is ±0.03, giving 25.03 ± 0.03.

  5. In a virtual condition analysis, the virtual condition of an external feature (pin) at MMC with a straightness tolerance of 0.01 mm is:

    Answer: MMC diameter plus the straightness tolerance

    Virtual condition for an external feature = MMC size + applicable geometric tolerance, representing the worst-case boundary.

  6. A locational clearance fit (LC fit) is characterized by:

    Answer: Snug fits for stationary parts with small clearance

    LC (Locational Clearance) fits provide snug to small clearances for stationary parts that need accurate location but are not designed to run.

  7. Which of the following best describes how tolerances are verified during inspection using a go/no-go gauge?

    Answer: The GO gauge checks the MMC boundary; the NO-GO gauge checks the LMC boundary

    The GO gauge must pass through (checking the MMC limit), while the NO-GO gauge must not pass through (checking the LMC limit).