Deck 5: Modeling and Refinement

Question 1

The design review process determines _______

A) If the drawings will be available
B) If money will be committed
C) If CAD staff is available
D) None of the above

Answer 1

If money will be committed

Question 2

Animation and kinematic analysis uses CAD data to determine __________

A) Whether the design will function properly before any parts are actually built
B) Whether the design is cost effective
C) How well parts will fit together
D) None of the above

Answer 2

Whether the design will function properly before any parts are actually built

Question 3

What are Descriptive models?

A) A handwritten description only
B) A picture only
C) Either words or pictures
D) None of the above

Answer 3

Either words or pictures

Question 4

An analytical model captures

A) Structural form
B) Metallurgy of Model
C) Finite element analysis
D) None of the above

Question 5

Finite Element Analysis (FEA) model is used to__________

A) Generate the stress plot
B) Generate the parts list
C) Generate the BOM
D) All of the above

Question 6

What are the qualities that can make models more or less useful?

A) Visual (presenting information graphically)
B) Understandable (contain detail in a format suited to the audience)
C) Flexible (allow quick and easy updates and changes)
D) All of the above

Question 7

Paper drawings can be very effective for_____________

A) Quickly communicating the design of small parts for manufacturing
B) Never using paper drawings
C) Always using a 2 pencil
D) None of the above

Question 8

An advantage of 2D CAD drawings is they ________.

A) Can quickly be printed to different scales
B) Can be separated onto different layers
C) Can query the database and the information
D) All of the above

Question 9

Descriptive geometry is _____________________________

A) A written description of a solid model
B) is the study of producing views of an object that show true lengths, shape, angles, and other information about an engineering design
C) A scaled-down hand drawing
D) None of the above

Question 10

What best describes "constraint-based modeling"?

A) Mechanical supports for the physical model
B) Relationships that defined parts of a 2D model that are maintained by the software when you make changes to the drawing
C) A system that can be used only on 2D drawings
D) None of the above

Question 11

Physical models provide a difficult visual reference.

Question 12

A 3D CAD model offers all the benefits of a 2D model and a physical model.

Question 13

Virtual reality (VR) refers to interacting with a 3D CAD model as if it were real-the model simulates the way the user would interact with a real device or system.

Question 14

The term virtual prototype describes 2D CAD systems.

Question 15

A 3D wireframe can be useful for piping layout around other 3D equipment,

Question 16

Wireframe models always include surfaces that can be shaded.

Question 17

CAD surface models define a shape by storing its surface information.

Question 18

Storing the definitions of the surfaces in the CAD digital database is termed boundary representation (BREP).

Question 19

Triangulated Irregular Networks (TINs) are used in 2D flat plan layouts.

Question 20

A NURBS surface is defined by a set of vertices in 3D space that are used to define a smooth surface mathematically.