Deck 12: Solid 3D Modeling: Computational Design and Analysis

Question 1

Which of the following is not a type of visualization image?

A)animation
B)stereo images
C) transparency
D) intrinsic

Answer 1

D

Question 2

Which of the following is not one of the basic methods of engineering modeling?

A)wireframe
B)surface
C) photorealism
D) solid modeling

Answer 2

C

Question 3

The wireframe method of modeling is the most time-consuming computationally.

Answer 3

False

Question 4

Parametric solid modeling uses mathematical calculations to improve drawing accuracy and speed.

Question 5

A wireframe model can be equated to having the ability to "holding water."

Question 6

Visualization is the pictorial representation of data for the purpose of more clearly and concisely communicating information.

Question 7

A disadvantage of visualization is that the hardware and software are not affordable for most people and companies.

Question 8

Solid modeling is the most accurate type of modeling.

Question 9

Flat shading is commonly used today to increase realism in visualization.

Question 10

Accurate shadow casting requires a rendering process known as radiosity.

Question 11

Visualization is beneficial because it allows extremely large amounts of data to be seen, and therefore comprehended.

Question 12

Only the most expensive graphics subsystems are capable of displaying and manipulating shaded images in real time.

Question 13

A person who is going to create effective visualization images should have personal expertise, training, and comprehension.

Question 14

Computer technology and visualization have made it possible to resolve problems that were previously too complex to solve.

Question 15

By using visualization, more complex engineering problems are generating increasingly large amounts of information.

Question 16

The next logical step from 3D wireframe is to add surface modeling, or skins.

Question 17

Only high-dollar problems, such as those faced by NASA, justify the effort involved in visualization.

Question 18

Which of the following is the appropriate type of visualization image to represent an item in a physical or hypothetical environment?

A)virtual reality
B)holography
C) photorealism
D) animation

Question 19

Single-frame, still images are one of the most commonly used types of images for visualization.

Question 20

Which of the following is not a method for representing visualization variables?

A)color
B)motion
C) symbols
D) thermal analysis

Question 21

Which of the following intends to create environments permitting a sense of how a design may feel or function?

A)holography
B)virtual reality
C) animation
D) solid modeling

Question 22

This visualization application can be used to reduce prototyping costs.

A)kinematic simulations
B)computational fluid dynamics
C) finite element analysis
D) preassembly analysis

Question 23

Which of the following is not a common Boolean Operator used in solid modeling?

A)Intersection
B)Development
C) Difference
D) Union

Question 24

To measure the impact of a car crashing into a wall would require a(n):

A)kinematic simulation
B)animation
C) prototyping analysis
D) virtual reality

Question 25

Which of the following is not an engineering visualization category?

A)holography
B)finite element analysis
C) thermal analysis
D) computational fluid dynamics

Question 26

Which of the following is not an advantage of using visualization?

A)More complex engineering problems are generating increasingly large amounts of information.
B)Increased computational speed makes it possible to perform visualization tasks on workstations and personal computers instead of being limited to super computers.
C) The decision how to represent the input data is subjective and customizable.
D) Improved user interfaces make the operation of systems and production of visualization output easier to perform.

Question 27

Analyzing the stress applied to roof truss is an example of:

A)solid modeling
B)virtual reality
C) finite element analysis
D) realistic animation

Question 28

In what case does virtual reality provide a more complete and realistic simulation than visualization images?

A)when multiple senses are important
B)when shadow casting, transparency, reflections, and refractions are important
C) when time-dependent variables and active visualization of objects or events are represented
D) when the three-dimensionality of an object from multiple viewpoints is important

Question 29

This type of shading provides the highest quality in shaded images.

A)flat
B)rendered
C) phong
D) gouraud

Question 30

Which of the following is a type of constraint used in parametric modeling?

A)length
B)width
C) weight
D) roundness

Question 31

Solid models, compared to surface models:

A)are more complicated to create
B)require more advanced computers
C) must have a wireframe drawn first
D) are represented in 3D

Question 32

The advantage of this type of visualization image is that it conveys depth similar to that in the real world.

A)animation
B)holographic
C) virtual reality
D) photorealistic

Question 33

_____ uses computers to study gases and their characteristics under a variety of conditions.

A)Finite element analysis
B)Thermal analysis
C) Kinematic analysis
D) Computational fluid dynamics

Question 34

Which of the following is not true regarding stress analysis?

A)Stress is a critical factor in engineering designs of all types.
B)Trained designers may be able to do basic stress analyses, but critical analyses should be left for specialists.
C) Prior to being analyzed for stress, a model of a part must be broken up into a finite number of polygonal elements.
D) Stress risers are desirable to assure that parts will not fail.

Question 35

An example of an application using thermal analysis is:

A)the design of artificial turf
B)the design of heat ducts
C) the design of bridges
D) the design of microchips

Question 36

The process of applying patterns to object surfaces in photorealism is called:

A)texture mapping
B)rendering
C) radiosity
D) ray tracing

Question 37

An example of an application using computational fluid dynamics is:

A)the design of artificial turf
B)the design of artificial intelligence
C) the design of artificial knees
D) the design of artificial hearts