Sophomore Exam Review

Flashcards for Sophomore Exam Review based on lecture notes.

What coordinates are required to locate any point in 3D space?

X, Y, and Z coordinates

What is the right-hand rule used for?

Used to determine the positive direction of the Z-axis

What are the ribbon and its panels used to do?

Access tools and commands quickly and efficiently

What is a viewpoint?

A position in 3D space from which a model is viewed

What are the preset isometric viewpoints in AutoCAD?

Top, Right, Left, Front, Back, Bottom Isometric

What are the preset orthographic viewpoints in AutoCAD?

Top, Bottom, Front, Back, Left, Right

Which command allows you to dynamically change your viewpoint using an on-screen cube icon?

ViewCube

What is a solid model?

A 3D object with volume and mass properties

What is a surface model?

A model made of surfaces without thickness or mass

What is a primitive in AutoCAD?

Basic 3D shapes like boxes, spheres, cylinders

Which is considered the most realistic presentation of a model?

Rendered view

Which command is used to create a solid cube?

BOX command

The PLANESURF command creates a ____.

Flat planar surface

Which type of mathematical calculations are used in the construction of solid models?

Boolean calculations

The three types of Boolean operations are __.

Union, Subtract, Intersect

What is a helix?

A 3D spiral shape

Which objects can be converted into a region?

Closed 2D shapes such as circles, polylines, ellipses

A ____ projection has receding lines that converge, while a(n) ____ projection has receding lines that are parallel.

Perspective; Parallel

Which commands produces a continuous 3D orbit?

3DCORBIT command

What is the function of the PLAN command?

Restores a top-down view of the current UCS

Which command and option are used to restore the WCS, regardless of the current UCS?

UCS command with “World” option

What is the purpose of the UCS icon?

Displays orientation of the UCS axes

What does the ZAxis option of the UCS command allow?

Rotates the UCS around the Z-axis

How is a model space viewport made active?

Click inside it or use CTRL+R to cycle

How is text given a thickness?

By assigning a value in the Thickness property

Which commands are used to create text that can then be given a thickness?

TEXT and MTEXT

A solid extrusion is a(n) ____.

3D object with volume

Which object types can be extruded into a solid?

Closed 2D shapes like polylines, circles, regions

Give two true statements about Revolutions?

Creates solids by rotating; Angle must be less than or equal to 360°

Which of the following shapes can be revolved into a surface?

Any closed shape

What is a sweep?

Creates a 3D solid by sweeping a 2D shape along a path

What is required to create a sweep?

Profile and a path

What is a loft?

Creates 3D solid between two or more profiles

Properties of a 3D solid are modified using the Properties palette. How is this palette displayed?

Type PROPERTIES or press CTRL+1

What does it mean to say that AutoCAD is a parametric solid modeling program?

Model features can be changed by adjusting dimensions

What is the history of a composite solid?

Record of how a solid was built using Boolean operations

Which of the following commands allows an object to be rotated, moved, and scaled in one operation?

3DALIGN

Which of the following commands allows an object to be moved along any plane of the current UCS?

MOVE command

Which command is active when the move gizmo is displayed?

3DMOVE command

If the 2D Wireframe visual style is current when the 3DROTATE or 3DMOVE command is entered, what happens to the display?

The object appears in wireframe view

Which command is active when the rotate gizmo is displayed?

3DROTATE command

Which of the following commands is used to mirror objects about any plane, regardless of the current UCS?

MIRROR3D command

What are the three components of a rectangular 3D array?

Number of rows, columns, and levels

Which command is use to place a round on the edge of a solid?

FILLET

What commands is used to convert a surface object into a solid object?

THICKEN

What are the three basic types of 3D solids in AutoCAD?

Primitive, swept, and revolved solids

The SOLIDEDIT command allows editing of what parts of a solid?

Faces, edges, and bodies

What are default visual styles available in AutoCAD?

2D Wireframe, Realistic, Shaded, Hidden, etc.

What is a face style for a 3D visual style?

The way faces are rendered visually (e.g. shaded or edges-only)

Name the lights available in AutoCAD

Point, Spot, Distant, Web, and Sun lights

What methods can be used to attach materials?

Drag from Materials Browser or use MATERIALATTACH

What is the easiest way to remove a material from an individual object?

Use REMOVE MATERIAL command

List three material types in AutoCAD?

Metal, Glass, Wood

Which light is like natural light just before sunrise?

Distant Light

Which light provides illumination much like the Sun?

Distant light

Which lights is represented by a light glyph in AutoCAD?

Point Light, Spot Light (shown as glyphs)

To add a background to a scene, what must first be done?

Set a Visual Style that supports backgrounds

In order to add fog or depth cueing to a scene, what must first be done?

Set visual style to one that allows rendering effects

When is a camera automatically created?

When you place a camera object in the drawing

What is a hidden display?

A display that hides lines behind surfaces

What is the purpose of materials browser?

Manage and assign materials to objects