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AutoCad Review

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AutoCad Review Answer Key

Instructions: For the first 14 questions, please use the words listed below to fill in the blanks. For question 15 you will have to draw on your own knowledge of AutoCad.

Sweep * Loft * Revolve * Extrude * Closed * Open * Primitives * ViewCube * Steering Wheel
3-D Orbit * Wireframe * Solid * Surface * Mesh

1. 
The Sweep command draws a solid or surface object by extending a profile shape (the swept object) along a specified path.
2. 
The Loft tool creates a 3D solid or surface in the space between several cross sections.
3. 
The Revolve tool creates a 3D solid or surface by sweeping an object around an axis.
4. 
The Extrude command creates a 3D solid from an object that encloses an area, or a 3D surface from an object with open ends.
5. 
A closed polyline creates a 3-D Solid Model.
6. 
A open polyline creates a surface model.
7. 
Spheres, cylinders and pyramids are referred to as 3D primitives.
8. 
The ViewCube is a navigation tool with a clickable and draggable interface that you use to switch between standard and isometric views of your model when you are working in 2D model space or 3D visual style.
9. 
In 3-D Orbit View the camera moves around as you move the cursor but the object remains in place.
10. 
The Steering Wheel is a tool / command that allows you to navigate or control the direction where the image will be seen, and by what method the object should be seen.
11. 
A Wire-Frame model is a visual presentation of a 3-dimensional (3D) or physical object. It is the simplest of true 3D drawings.
12. 
Solid models are efficient to use, easy to combine primitives and extruded profiles, and offer mass properties and sectioning capabilities.
13. 
A Surface model is a thin shell that does not have mass or volume.
14. 
A Mesh model consists of vertices, edges, and faces that use polygonal representation, including triangles and quadrilaterals, to define a 3D shape.
15. 
List three advantages of 3-D Modelling:
  • Answers will vary but should include three of the following:
    Ability to generate section and auxiliary views
    Ability to remove hidden lines and do realistic shading
    Ability to run part interference checks for engineering analysis
    Ability to add lighting and realistic rendering to models
    Ability to create animations
    Ability to extract manufacturing data for making the part

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