Question 1

Hidden lines are drawn as a series of unevenly sized short dashes.

Accepted Answer

Hidden lines in technical drawing are typically represented as a series of evenly sized short dashes.

Question 2

Dimensions that can be added together to come up with one overall dimension are called ____ dimensions.

Accepted Answer

Chain dimensions can be added together to come up with one overall dimension, as they represent a series of dimensions that are linked together in a sequence.

Question 3

All visible edges are represented by ____ lines.

Accepted Answer

Object lines are used to represent the edges of objects that are visible in the drawing.

Question 4

The dimension (distance between the extension lines) is sometimes ____.

Accepted Answer

The dimension is typically lettered above the dimension line to clearly indicate the measurement.

Question 5

Centerlines are used to indicate that an object is ____.

Accepted Answer

Centerlines are used in technical drawing to indicate the axis of symmetry for symmetrical objects, helping to visualize their alignment and design.

Question 6

Drawings serve as a language for the construction industry.

Accepted Answer

Drawings are used as a universal form of communication in the construction industry, conveying detailed instructions, designs, and specifications for the construction of buildings and infrastructure.

Question 7

The ____ line is used to show important overhead construction.

Accepted Answer

The phantom line is used in drafting and technical drawing to indicate important overhead construction or features that are not visible on the plane of the drawing itself.

Question 8

On construction drawings, dimensions are expressed in ____.

Accepted Answer

In the United States, construction drawings typically use feet and inches for dimensions.

Question 9

____ lines are thin, solid lines that project from an object to show the extent or limits of a dimension.

Accepted Answer

Extension lines are thin, solid lines that extend from the object to define the limits of a dimension, helping to clearly indicate the size or boundary being measured without cluttering the drawing.

Question 10

Centerlines are made up of ____.

Accepted Answer

Centerlines are made up of long and short dashes to distinguish them from other types of road markings.

Question 11

____ lines are used to show alternate positions of objects.

Accepted Answer

Phantom lines are used in technical drawing to indicate alternate positions of moving parts, adjacent positions of related parts, and to illustrate repetitive features.

Question 12

Some section views may not be referenced by a cutting-plane line on any other view.

Accepted Answer

Section views can be directly labeled and detailed without necessarily being referenced by a cutting-plane line, especially in cases where the section is standard or its location is clearly understood without such a reference.

Question 13

The ____ of an arc is the distance from the center to the edge of the arc.

Accepted Answer

The radius of an arc is the distance from the center of the circle from which the arc is a part to any point on the arc itself.

Question 14

Extension lines ____.

Accepted Answer

Extension lines in technical drawing are used to indicate the extent of a dimension and do not touch the object they indicate, to avoid confusion with the object lines. They are thin, solid lines that extend outward from the object.

Question 15

One type of dashed line, the ____ line, is used to show the edges of objects that would not otherwise be visible in the view shown.

Accepted Answer

Hidden lines are used in technical and engineering drawings to represent edges that are not visible to the viewer. They help in understanding the full shape and structure of an object by showing the outlines of features that are obscured by other parts of the object.

Question 16

____ are used to show the centers of round or cylindrical objects.

Accepted Answer

Centerlines are used to indicate the centers of round or cylindrical objects, helping to visually communicate the geometry of these features in technical drawings.

Question 17

A dimension line is drawn from one ____ line to the next.

Accepted Answer

Dimension lines are drawn from one extension line to the next to indicate the extent and direction of a dimension. Extension lines project from the object to define the limits of the dimension.

Question 18

To lay out an arc or part of a circle, you do not need to know the radius.

Accepted Answer

To lay out an arc or part of a circle accurately, you need to know the radius, as it determines the curvature and size of the arc or circle.

Question 19

____ lines are used to show the shape of an object.

Accepted Answer

Object lines are used in drafting to indicate the edges and outlines of an object, showing its visible boundaries and shape.

Question 20

A dimension line is drawn from one extension line to the next.

Accepted Answer

A dimension line is indeed drawn from one extension line to the next, indicating the distance or size of the feature being measured.

Quiz 4: Alphabet of Lines