Hands-On AutoCAD ©2005

Chapter 14: Basic 3D CAD

Wireframe Models

1.
A wireframe model of a titanium block would most closely resemble a(n)
A)ice cube.
B)empty cardboard box.
C)box-shaped wire basket.
D)book.
2.
Wireframe drawings can be used to
A)show and define the sides of an object.
B)present design ideas to potential clients.
C)calculate volume.
D)determine spatial relationships between objects.
3.
If you were on one side of a wireframe cube looking toward a solid sphere on the other side of the cube, you would see
A)only the wireframe.
B)the solid sphere and the wireframe, because the wireframe has no sides.
C)the outline of the sphere through the translucent walls of the wireframe.
D)the solid sphere only, because the wireframe is transparent.
4.
Of the following, the object best suited for a wireframe model is
A)the hull of a speedboat.
B)a refrigerator.
C)a wire shelving unit.
D)a laptop computer.
5.
To edit a wireframe model, use
A)grips.
B)the WIREDIT command.
C)the SPLINEDIT command.
D)the WEDIT command.
6.
A wireframe model is created using
A)2D objects with the EXTRUDE command.
B)2D objects such as points, lines, and circles.
C)3D objects such as spheres and cones.
D)3D commands such as REVOLVE and TABSURF.
7.
One disadvantage of using wireframes as opposed to surface or solid models is that
A)they take longer to create.
B)they take up more space on the storage medium.
C)they corrupt more easily.
D)they can be difficult to understand because they are "stick figures."
8.
The main difference between creating wireframe models and creating 2D objects is that
A)2D objects cannot be extruded.
B)wireframe objects cannot be edited using 2D editing commands.
C)2D objects are created on two or more planes.
D)wireframe geometry is created using the X, Y, and Z axes.
9.
To avoid surprises when you create a wireframe model, it is a good idea to
A)avoid using object snaps.
B)stay in the default world coordinate system.
C)specify coordinates using the absolute technique.
D)view the model from the top (plan) view while working.
10.
Compared with surface and solid models, wireframe models take
A)about the same amount of time to create.
B)less time to create.
C)more time to create.
D)about 30 minutes to create.
Glencoe Online Learning CenterTrade & Industrial Education HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.