Question 1

Coaxial holes that are aligned through different features can be controlled with positional tolerancing using a feature relating zone for each hole and a pattern locating zone for the holes as a group.

Accepted Answer

This statement is true. Positional tolerancing using a feature relating zone for each hole and a pattern locating zone for the holes as a group can effectively control the alignment of coaxial holes through different features.

Question 2

If a situation occurs in which the interrelationship between patterns such as location and size is not desired, then the specific note "SEP REQT", which means separate requirement, shall be placed beneath each affected feature control frame.

Accepted Answer

This statement is true. "SEP REQT" is a specific note used to indicate that certain patterns or features should be separated and controlled independently. When this note is placed beneath a feature control frame, it signifies that the interrelationship between patterns such as location and size is not desired.

Question 3

Profile tolerances are always equally disposed bilateral unless otherwise specified.

Accepted Answer

Profile tolerances are assumed to be equally disposed on either side of the true profile unless it is specifically stated otherwise in the design.

Question 4

If a part feature is produced at MMC, it is considered to be at perfect form.

Accepted Answer

If a part feature is produced at MMC (Maximum Material Condition), it means that it has the maximum amount of material allowed within the specified tolerance zone. It does not necessarily guarantee perfect form, but rather it ensures that the part has a functional fit and meets the design requirements.

Question 5

Circularity tolerance must always be less than the size tolerance except for parts subject to free state variations.

Accepted Answer

Circularity tolerance is a measure of how perfectly circular a feature or part is, whereas size tolerance is a measure of the allowable variation in size from the nominal or target size. Since circularity is a dimension related to the shape of the part, it makes sense that the circularity tolerance is always smaller than the size tolerance so that the part is not oversized or undersized due to its non-circular shape. However, in parts subject to free-state variations, where a part may change shape or size due to external factors, it may be acceptable for circularity tolerance to be equal to or greater than the size tolerance.

Question 6

The location of multiple features is handled in a manner similar to the location of a single feature.

Accepted Answer

The location of multiple features can be handled in the same way as the location of a single feature. The same techniques and methods can be used to specify the location of multiple features in a dataset.

Question 7

All three material condition modifying elements have specific symbols associated with them.

Accepted Answer

The answer of All three material condition modifying elements have...

Question 8

Virtual condition is one of the conditions in which a feature size can be outside of MMC.

Accepted Answer

Virtual condition is a boundary condition used in geometric dimensioning and tolerancing (GD&T) that combines the effects of size and geometric tolerances. It is not a condition where a feature size can be outside of Maximum Material Condition (MMC); rather, it defines the worst-case boundary for a feature considering both size and geometric tolerances.

Question 9

Coaxial means that one or more features have similar axes.

Accepted Answer

The answer of Coaxial means that one or more features...

Question 10

When an LMC material condition symbol is used in conjunction with a geometric tolerance, the specified tolerance is held at the MMC produced size.

Accepted Answer

When an LMC material condition symbol is used, it means that the part can have maximum material at the specified feature. It does not guarantee the MMC produced size. Therefore, the specified tolerance is not necessarily held at the MMC produced size.

Question 11

When the straightness tolerance is applied to the axis of the feature by a relationship with the diameter dimension, RFS is implied unless otherwise specified, and the actual feature size plus the geometric tolerance can exceed the MMC perfect form envelope.

Accepted Answer

When the straightness tolerance is applied to the axis of the feature by a relationship with the diameter dimension, RFS (Regardless of Feature Size) is implied unless otherwise specified, which means that the tolerance applies regardless of the actual size of the feature. Therefore, the actual feature size plus the geometric tolerance can exceed the MMC (Maximum Material Condition) perfect form envelope, resulting in a larger envelope than the feature itself.

Question 12

When drawing a feature control frame for circularity, 0.06 is the notation if there was a 0.06 diameter tolerance zone.

Accepted Answer

The circularity tolerance does not involve a diameter tolerance zone; it specifies a tolerance zone bounded by two concentric circles, within which all points on the surface must lie.

Question 13

The form of a feature is controlled by the location tolerance limits.

Accepted Answer

The form of a feature is controlled by form tolerances, not location tolerances. Location tolerances specify the location of features relative to each other or to a datum, while form tolerances control the shape of the feature itself.

Question 14

Profile geometric tolerances control the form, orientation, and/or location of straight lines or surfaces, arcs, and irregular curves.

Accepted Answer

This statement is true. Geometric tolerances are used to specify the allowable deviation in form, orientation, and/or location of various types of features on a part or assembly, including straight lines or surfaces, arcs, and irregular curves. These tolerances are an important aspect of mechanical design and manufacturing, and are typically expressed using symbols and conventions specified by industry standards such as ASME Y14.5.

Question 15

The positional tolerance of slotted holes can be accomplished by locating the slot centers with basic dimensions and providing a feature control frame to both the length and width of the slotted holes.

Accepted Answer

This statement is true. The use of a feature control frame allows for the specification and control of the position, size and orientation of the slot with respect to the datum reference frame.

Question 16

The symbol for profile tolerance of a surface is an arc the height of the lettering.

Accepted Answer

The symbol for profile tolerance of a surface is two parallel lines with the height of the lettering written between them.

Question 17

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

Accepted Answer

When the feature control frame for straightness is applied to the diameter dimension of a cylindrical part, it specifies the straightness of the axis of the part.

Question 18

When a datum feature symbol appears in a feature control frame along with a datum reference, it means they are inherently related.

Accepted Answer

The answer of When a datum feature symbol appears in...

Question 19

Circular runout provides control of single circular elements of a surface and controls circularity and the relationship of the common axes (coaxial) of parts.

Accepted Answer

Circular runout is a geometric tolerance that provides control of single circular elements of a surface, and the tolerance zone establishes a circular boundary around the true center axis. It is often used to control the coaxiality of parts, ensuring that their common axis is aligned within a specified tolerance zone. Therefore, the statement is true.

Question 20

Cylindricity is a type of profile tolerance.

Accepted Answer

Cylindricity is a form tolerance, not a profile tolerance. It controls the roundness and straightness of a cylindrical feature.

Quiz 11: Reading Geometric Dimensioning and Tolerancing