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| 1 | |
SKETCHPAD, considered to be the first CAD program, was developed in the |
| | A) | 1940s. |
| | B) | 1950s. |
| | C) | 1960s. |
| | D) | 1970s. |
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| 2 | |
What is the minimum amount of information needed to define a 3-D model? |
| | A) | vertex list |
| | B) | vertex list and edge list |
| | C) | vertex list, edge list, and face list |
| | D) | point list, vertex list, edge list, and face list |
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| 3 | |
All of the following are considered weaknesses of wireframe modeling except: |
| | A) | lack of computing efficiency |
| | B) | lack of solidity |
| | C) | lack of uniqueness |
| | D) | ambiguity |
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| 4 | |
All of the following are common parametric curves used to create surface patches except: |
| | A) | NURBS |
| | B) | b-spline |
| | C) | Bezier |
| | D) | Boolean |
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| 5 | |
Which type of modeler only works with additive techniques? |
| | A) | wireframe |
| | B) | primitive |
| | C) | constructive solid geometry |
| | D) | boundary representation |
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| 6 | |
Which type of Boolean operation depends on knowing the overlap between the two solids? |
| | A) | union |
| | B) | intersection |
| | C) | difference |
| | D) | all of the above |
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| 7 | |
Which type of Boolean operation creates a different result depending on which solid is listed first in the operation? |
| | A) | union |
| | B) | intersection |
| | C) | difference |
| | D) | all of the above |
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| 8 | |
Which type of sweeping operation is sensitive to both the location and orientation of the sweep axis? |
| | A) | circular |
| | B) | linear |
| | C) | spline |
| | D) | all of the above |
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| 9 | |
What is the technique used to create multiple copies of objects which share database information? |
| | A) | translating |
| | B) | duplicating |
| | C) | lofting |
| | D) | instancing |
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| 10 | |
The primary elements needed to create a projection of a 3-D on a computer screen are: |
| | A) | global coordinate system, viewport |
| | B) | model, viewer, image plane |
| | C) | model, image plane |
| | D) | image plane, local coordinate system, viewport |
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| 11 | |
All of the following are rigid body transformations, except: |
| | A) | rotation |
| | B) | shearing |
| | C) | reflection |
| | D) | translation |
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| 12 | |
______________ control the geometric behavior of a dynamic model. |
| | A) | Standards |
| | B) | Booleans |
| | C) | Constraints |
| | D) | Habits |
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| 13 | |
In a constraint-based modeler, to place a hole at the center of a bar whose length is defined as p1=20, the center of the hole should be defined as: |
| | A) | p2=10 where p2 is referenced from the edge of the bar |
| | B) | p2=10 where p2 is referenced from the center of the bar |
| | C) | p2= p1 / 2 where p2 is referenced from the edge of the bar |
| | D) | two of the above |
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| 14 | |
All of the following are elements needed to define a generalized sweep, except: |
| | A) | Intent |
| | B) | Profile |
| | C) | Direction |
| | D) | Workplane |
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| 15 | |
A _________________________ sweep is dependent on the location of the axis/vector relative to the profile |
| | A) | path-based |
| | B) | linear |
| | C) | revolved |
| | D) | blend |
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| 16 | |
Which two methods of defining a workplane both define the workplane parallel to a planar face? |
| | A) | Tangent and Through |
| | B) | Offset and Tangent |
| | C) | Angle and Orientation |
| | D) | Through and Offset |
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| 17 | |
All of the following are examples of implicit constraints, except: |
| | A) | Same size |
| | B) | Intersection |
| | C) | Overlap |
| | D) | Tangency |
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| 18 | |
A parent feature should always be __________________ relative to its child feature |
| | A) | in a separate model |
| | B) | created at the same time |
| | C) | above in the feature tree |
| | D) | created after |
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| 19 | |
Which type of sweep definition takes the sweep infinitely far? |
| | A) | to next |
| | B) | offset |
| | C) | blind |
| | D) | through all |
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| 20 | |
All of the following are feature definition parameters that typically can be modified, except: |
| | A) | side of profile to work on |
| | B) | type of operation |
| | C) | sweep direction |
| | D) | sweep distance |
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| 21 | |
Which method of analysis takes into account forces acting on the model? |
| | A) | kinematics |
| | B) | mass-properties |
| | C) | dynamics |
| | D) | process planning |
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| 22 | |
Which data exchange method was originally defined by a private company? |
| | A) | ASCII |
| | B) | IGES |
| | C) | NURBS |
| | D) | DXF |
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