CAD240 midterm

What is the recommended minimum space between the object and the first dimension line?

.400

An angle is assumed to be ____ when lines are drawn perpendicular to one another in an orthographic view.

90 Degrees

When a feature of size departs from MMC, any amount of variation is permitted, provided ____.

All o f the above

Leader lines should not be drawn ____.

Both A and B.

Leaders extending from a hole specification should point toward the ____ of the hole when connected to the circular view of the hole.

Center

____ may be used to control the cross-sectional shape of a cone.

Circularity

When an internal part is smaller than the mating external part, it is categorized as a(n) ____ fit.

Clearence

A(n) ____ is responsible for dimensioning a part so that the functional needs are met and the part is producible.

Designer

Compliance with drawing notes is less important than meeting the requirements of dimensions shown on the drawing.

False

Rule #1 establishes a perfect form boundary for each individual feature and ensures a perfect relationship between multiple features.

False

Tolerances associated with size dimensions permit form variations equal to half of the size tolerance.

False

The ____ measurement unit must be used when working to the current dimensioning and tolerancing standard.

Inch or millimeter

Present practice requires the radius symbol be ____ the dimension value.

Placed in front of

When space permits, which of the following is the preferred arrangement for the dimension line and dimension value?

The arrowheads, dimension line, and value inside (between) the extension lines.

Circularity form tolerances may be applied to establish the allowable variation on the roundness of any feature that has a circular cross section, including cylinders, cones, and spheres.

True

The number of trailing zeroes does not impact the value of the shown number (.125 is the same value as .12500).

True

A machinist might be able to help a designer by telling him or her ____.

all of the above

The tolerances applied to a feature affect ____.

all of the above

The limits for a radius dimension permit the arc to vary in radius, ____.

and the form of the surface may include reversals

Dimensions should be applied to the view in which the ____ of the feature is clearly shown.

contour

The ____ system is the least accurate measurement system.

cubit

Based on the current standard, the symbol for spotface is identical to the symbol for counterbore.

false

Chamfers of any angle may be specified using a note.

false

Even if there are no form tolerances applied, a feature of size must have perfect form when produced at least material condition.

false

When one feature control frame is indicated to apply to two or more features, those tolerance zones for those features are independent of one another.

false

Correct dimensioning practices defined by ASME Y14.5 and Y14.41 require placement of each symbol ____ the associated numeric value.

in a specific location relative to

____ features of size may be one enclosed shape or a collection of features that in combination establish a size boundary.

irregular

The countersink diameter on an irregular surface is equal to twice the ____ of the countersink.

minor radius

Each form tolerance specification applied on an extension line ____.

only controls surface conditions

____ is not a form tolerance.

perpendicularity

Position tolerances applied to threads control the location of the ____ unless noted otherwise.

pitch diameter

A cylindricity tolerance specification defines the ____ distance between two concentric cylinders that define the tolerance boundary.

radial

If the tolerance must be met at all possible produced sizes of the feature, it is said to apply ____ and no modifier is shown.

regardless of feature size

Which of the following does not establish only a form tolerance?

size

Dimension values in vertical dimensions are usually ____ to make them easier to read.

staggered

The spotface symbol has ____.

the letters SF within the symbol

A feature control frame for a form tolerance must contain a ____.

tolerance

A dimension value may be identified as basic.

true

A movable datum target is indicated with a datum target symbol and two lines forming a 60 ° angle that are centered on the horizontal line through the symbol.

true

Every feature of size has a minimum and maximum allowable size, even when a single limit dimension is applied to the feature.

true

Exceptions to Rule #1 include parts that are subject to free state variation.

true

Interpretation of a drawing is the ability to determine part requirements from what is shown when the drawing complies with standards.

true

It is permissible to dimension to a hidden line when the hidden line is part of a feature in a half section view.

true

Leader lines are not oriented horizontally or vertically.

true

Rule #1 in ASME Y14.5M defines what is often referred to as the envelope principle.

true

Some feature control frames are not required to include datum feature references.

true

The MMC modifier symbol may never be applied to a circularity tolerance.

true

Visualizing the geometric shapes in a part can help determine the dimensions that are needed.

true

____ dimensions have all values written horizontally.

unidirectional

Form tolerances are never ____.

used to establish location from datums