Question 1

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.

Accepted Answer

A wire shelving unit is best suited for a wireframe model because its structure primarily consists of lines and minimal surfaces, making it ideal for representation through a wireframe's lines and vertices without the need for detailed surfaces or textures.

Question 2

To edit a wireframe model, use
A)grips.
B)the WIREDIT command.
C)the SPLINEDIT command.
D)the WEDIT command.

Accepted Answer

Grips are used to edit various elements in CAD software, including wireframe models, by allowing users to click and drag on specific points (grips) to modify the shape or dimensions of the model.

Question 3

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.

Accepted Answer

A wireframe model is created using 2D objects such as points, lines, and circles to represent the edges of a 3D object without any surfaces.

Question 4

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."

Accepted Answer

Wireframes can be difficult to understand because they lack the visual detail of surface or solid models, making them appear as "stick figures" which can be hard to interpret, especially for complex designs.

Question 5

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.

Accepted Answer

Wireframe models are created using three dimensions (X, Y, and Z axes), allowing for a representation of volume and space, unlike 2D objects which are defined only on the X and Y axes.

Quiz 1: AutoCad 3D Modeling

Of the following, the object best suited for a wireframe model is

To edit a wireframe model, use

A wireframe model is created using

One disadvantage of using wireframes as opposed to surface or solid models is that

The main difference between creating wireframe models and creating 2D objects is that