Applied Engineering Metrology: Three Categories of Dimensioning
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Questions and Answers

What are the three categories of dimensioning mentioned in the text?

  • Geometric dimensioning, general dimensioning, and surface texture (correct)
  • General dimensioning, tolerancing dimensioning, and surface roughness dimensioning
  • General dimensioning, specific dimensioning, and surface dimensioning
  • Dimensioning by function, geometric dimensioning, and surface roughness dimensioning

    • What is the purpose of Geometric Dimensioning & Tolerancing (GD&T)?

  • To define features more accurately without increasing tolerances (correct)
  • To simplify the drawing process by reducing the number of dimensions required
  • To increase tolerances without affecting the accuracy of features
  • To provide a more generalized approach to dimensioning and tolerancing

    • Why has GD&T increased in practice in the last 15 years according to the text?

  • Due to the introduction of ISO 9000 standards (correct)
  • To simplify the process of dimensioning and tolerancing
  • To reduce the cost of manufacturing
  • Because of the introduction of advanced measurement tools

    • What is the system that uses standard symbols to indicate tolerances based on the feature's geometry?

    <p>Feature-based dimensioning &amp; tolerancing</p> Signup and view all the answers

    In which standard are GD&T practices specified according to the text?

    <p>ANSI Y14.5M-1994</p> Signup and view all the answers

    What does GD&T stand for?

    <p>Geometric Dimensioning and Tolerance</p> Signup and view all the answers

    When is GD&T typically used?

    <p>When part features are critical to a function or interchangeability</p> Signup and view all the answers

    What does MMC stand for in GD&T terminology?

    <p>Maximum Material Condition</p> Signup and view all the answers

    What is the purpose of the Envelope Principle in GD&T?

    <p>To define the size and form relationships between mating parts</p> Signup and view all the answers

    What is the purpose of Tolerance in GD&T terminology?

    <p>To specify the difference between MMC and LMC limits of a single dimension</p> Signup and view all the answers

    Geometric Dimensioning and Tolerancing (GD&T) is a means of dimensioning and tolerancing that considers the function of the part and its function with related parts.

    <p>True</p> Signup and view all the answers

    ISO 9000 requires not only the requirement of something, but also how it is to be controlled, leading to an increase in the practice of GD&T in the last 15 years.

    <p>True</p> Signup and view all the answers

    GD&T is sometimes referred to as feature-based dimensioning and tolerancing or true position dimensioning and tolerancing.

    <p>True</p> Signup and view all the answers

    GD&T practices are specified in ANSI Y14.5M-1994.

    <p>True</p> Signup and view all the answers

    General dimensioning, geometric dimensioning, and surface texture are the three categories of dimensioning mentioned in the text.

    <p>False</p> Signup and view all the answers

    GD&T can reduce or eliminate inspection of some features, saving money during production.

    <p>True</p> Signup and view all the answers

    The Envelope Principle in GD&T allows a variation in form between the least material condition (LMC) and the maximum material condition (MMC) of mating parts.

    <p>True</p> Signup and view all the answers

    The Maximum Material Condition (MMC) refers to the condition where a size feature contains the maximum amount of material within the stated limits of size.

    <p>True</p> Signup and view all the answers

    The Basic Dimension in GD&T is the nominal dimension from which tolerances are derived.

    <p>True</p> Signup and view all the answers

    The Envelope Principle in GD&T states that no portion of the feature may be outside a perfect form barrier at maximum material condition (MMC).

    <p>False</p> Signup and view all the answers

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