Exam 11: Reading Geometric Dimensioning and Tolerancing

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A cylinder is given the dimension Ø18.2/17.8. The feature control frame has one horizontal line as the first element, and "0.1" as the second element. What does this mean?

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Cylindricity is similar to circularity in that both ____.

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Name the type of dimension that is considered a theoretically perfect dimension. Basic dimensions are used to describe the theoretically exact size, profile, orientation, or location of a feature or datum target.

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Positional tolerancing using a feature relating zone for each aligned hole is ____.

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Datum features are selected based on their importance to the design of the part. Generally, three datum features are selected that are perpendicular to each other. What are the three datums are called?

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When the straightness feature control frame is combined with the diameter dimension of the part, then axis straightness is specified.

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When the profile tolerance is not equally split on each side of true profile, the total profile tolerance value is placed before the unequally disposed symbol in the feature control frame and the value of the tolerance that adds material to the feature or part is placed after the unequally disposed symbol.

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Describe and give an example of how datum features can be specified individually.

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RFS is an acronym for "regardless of feature size" and is assumed for all geometric characteristics unless otherwise specified.

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