2024 POAE Year End Review

What line type is this?

• section

• cutting plane

• angled

• object

The indicated line is a(n) _________ line.

• object

• border

• construction

• phantom

The indicated line is a(n) _____________ line.

• hidden

• phantom

• concealed

• construction

Line B-B is called a ______________ line.

• cutting plane

• section

• object

• center line

What kind of lines are these?

• center lines

• cutting plane lines

• construction lines

• border lines

Hidden lines...

• ...are very light lines.

• ...cannot be seen.

• ...are 1/8" long dashes with 1/16" gaps in between.

• ...are 1/8" long dashes followed by 3/4" long dashes with 1/16" gaps in between.

Center lines...

• ...are 1/8" long dashes followed by 3/4" long dashes with 1/16" gaps in between.

• ...are made up of a short dash that gets repeated.

• ...are not actually at the center of an object.

• ...are not helpful in dimensioning and just there for looks.

(a)   are long-short-short-long lines most often used to show the travel or movement of an object or a part in alternate positions. It can also be used to show adjacent objects or features.

__________________lines are thick (0.6 mm) dashed lines, that extend past the edge of the object 6mm (1/4") and have line segments at each end drawn at 90 degrees and terminated with arrows. The arrows represent the direction of the line of sight for the section view and they point away from the sectioned view.

• Cutting Plane

• Hidden

• Construction

• Viewing Plane

________________are used to show where an object is broken to save drawing space or reveal interior features. Break lines come in two forms: a freehand thick line, and. a long, ruled thin line with zigzags.

• Break Lines

• Hidden Lines

• Cutting Plane Lines

• Object Lines