Deck 1: AutoCad 3D Modeling

Question 1

You want to draw an octagon shape window on a vertical wall face in your 3D House Plan. Which UCS command option is best suited to place your User Coordinate System on this front wall face to ensure the window is placed flat on this wall?

A)Origin
B)ZAxis
C)3point
D)View

Answer 1

3point

Question 2

Which AutoCAD command will determine precisely the volume of a complex (or simple) 3D Solid part?

A)AREA
B)MASSPROP
C)VOLUME
D)PART

Answer 2

MASSPROP

Question 3

The purpose of the UCSICON command is to:?

A)Permit a user to move the UCS system.
B)Permit a user to redefine the location of 0,0.
C)Permit a user to control the placement and appearance of the icon to help you understand your orientation in the XYZ coordinate system.
D)Provide a working plane to draw on.

Answer 3

Permit a user to control the placement and appearance of the icon to help you understand your orientation in the XYZ coordinate system.

Question 4

The primary purpose of the UCS (User Coordinate System) is?

A)Helps a user to calculate the area of an object.
B)To determine angles for isometric projections.
C)Allows a user to select the desired type of drawing units.
D)Allows a user to draw on a specified 2D Plane in 3D space. E. Allows a user to define a place to put icons.

Question 5

To determine if two parts (3D Solids) will fit together without any interference, what 3D AutoCAD command would you use?

A)FIT
B)UNION
C)SUBTRACT
D)INTERFERE

Question 6

What is the volume of a cone with a 12? radius and a 12? height?

A)3,216,915.13 cu in
B)3,162,915.13 cu in
C)3,126,195.13 cu in
D)3,126,915.13 cu in

Question 7

You apply a property called Thickness to a standard AutoCAD CIRCLE. What type of AutoCAD object do you now have officially?

A)Surface Model (Polygon Mesh)
B)Solid Model (3D Solid)
C)PLINE
D)Cylinder

Question 8

The axis used to show depth in AutoCAD is the

A)W axis.
B)X axis.
C)Y axis.
D)Z axis.

Question 9

The right-hand rule is used to determine the direction of the

A)positive X axis.
B)negative Y axis.
C)positive Z axis.
D)negative X axis

Question 10

All of the axes in the 3D coordinate system meet at

A)60° angles.
B)90° angles.
C)120° angles.
D)135° angles.

Question 11

In AutoCAD, all objects are drawn on the

A)YZ plane.
B)XZ plane.
C)XY plane.
D)ZX plane.

Question 12

The UCS command

A)allows you to manipulate the user coordinate system.
B)controls display of the UCS icon.
C)defines the world coordinate system.
D)allows you to draw in the YZ plane.

Question 13

The World option of the UCS command

A)returns to the world coordinate system.
B)returns to the previous user coordinate system.
C)defines a new world coordinate system.
D)aligns a new coordinate system parallel to the screen.

Question 14

To allow you to view 3D models from different points of view, AutoCAD provides

A)three predefined 3D views.
B)six predefined 3D views.
C)ten predefined 3D views.
D)twelve predefined 3D views.

Question 15

The VIEW command does all of the following except

A)provide access to AutoCAD's predefined views.
B)provide access to custom views.
C)create a new custom view.
D)display the View toolbar.

Question 16

To view a model from any position in 3D space, use the

A)VIEW command.
B)3DZOOM command.
C)3DORBIT command.
D)PAN command.

Question 17

The View option of the UCS command

A)aligns a new UCS parallel to the screen.
B)aligns a new UCS to the selected face of an object.
C)moves the origin of the current UCS to the lower left corner of the screen.
D)applies the current UCS to a specified viewport.

Question 18

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.

Question 19

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.

Question 20

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 tr

Question 21

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.

Question 22

To edit a wireframe model, use

A)grips.
B)the WIREDIT command.
C)the SPLINEDIT command.
D)the WEDIT command.

Question 23

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.

Question 24

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."

Question 25

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.