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True/False Quiz Questions
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1
3-D modeling has been used extensively in industry since the 1960's.
A)True
B)False
2
CAD did not exist until the advent of microcomputers during the late 1980's.
A)True
B)False
3
In a valid wireframe model, each face must contain at least three vertices and form a closed loop.
A)True
B)False
4
Wireframe models must contain face information to be valid.
A)True
B)False
5
One problem with wireframe models is ambiguity.
A)True
B)False
6
Lack of local control in some surface patches creates problems with continuity.
A)True
B)False
7
Four points are needed to define a Bezier curve.
A)True
B)False
8
One advantage to solid modelers is that they can model non-manifold objects.
A)True
B)False
9
A Boolean difference operation is sensitive to which solid is placed first in the equation.
A)True
B)False
10
The Boolean intersection of two solids which do not overlap creates a null object.
A)True
B)False
11
A boundary representation model describes the inside volume of the solid.
A)True
B)False
12
Workplanes are usually described by a world, or global coordinate system.
A)True
B)False
13
Parametric techniques simplify the construction of solid primitives.
A)True
B)False
14
Linear sweeps of profiles are usually done parallel to the workplane.
A)True
B)False
15
A 3-D modeler can usually define multiple, simultaneous views of an object.
A)True
B)False
16
Tweaking can alter both the geometry and topology of an object.
A)True
B)False
17
The design intent of a constraint-based model is a static property of the model.
A)True
B)False
18
Profiles can typically be swept parallel to the workplane.
A)True
B)False
19
Sweeping uses a 2-D profile to define a 3-D object.
A)True
B)False
20
Construction geometry is directly represented in the final part model.
A)True
B)False
21
Both faces and vertices can be used to define a workplane.
A)True
B)False
22
A dimensional constraint is an example of an implicit constraint.
A)True
B)False
23
An open loop profile defines both an inside and outside.
A)True
B)False
24
An overconstrained profile has a clear precedence of contraints.
A)True
B)False
25
A blind sweep indicates that a finite distance is given for the sweep distance.
A)True
B)False
26
Linear arrays can duplicate in two dimensions simultaneously.
A)True
B)False
27
Rotation changes the projection of a model in a parallel projection.
A)True
B)False
28
A subassembly can be a component in an assembly.
A)True
B)False
29
A properly constrained model captures design intent.
A)True
B)False
30
Layers are typically implemented in a 3-D modeling system as a nonhierarchical organization.
A)True
B)False
31
Feature-based modeling is used to represent special geometric features of uncommon manufacturing processes.
A)True
B)False
32
CNC code is used to translate models from one CAD package to another.
A)True
B)False





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