StudyQuestions-Quizes-PracticeTests Test3 AutoCAD-3

What is the index of refraction?

A measure of how much light is bent as it passes through transparent or semitransparent materials.

Which of the following statements best describes default lighting in AutoCAD?

It is composed of two light sources that evenly illuminate all surfaces.

When a face on a solid is moved using the SOLIDEDIT command, what happens to the original solid?

It is either lengthened or shortened.

Which of the following statements about a section object is false?

It is restricted to a single plane.

What is the function of the materials browser in relation to materials?

It is used to manage materials.

The physical properties of a solid can be exported to a MPR file using the ______________________________ command.

MASSPROP

Which of the following commands analyzes a solid model and provides its physical properties in a list?

MASSPROP

Which of the following is a face style for a 3D visual style?

None. Gooch. Realistic. ====> All of the above.

Which of the following are material types in AutoCAD?

Plastic, ceramic, and water.

Which of the following does not describe the decrease of light intensity over distance?

Attenuation. Falloff. Decay. =====> None of the above.

On which part of the solid is the Imprint option of the SOLIDEDIT command applied?

Body

When looking at any real object, which color component is the predominant color of the material?

Diffuse.

Which of the following statements is not true regarding drawing views created with the VIEWBASE command?

Drawing views can be edited to update the original model geometry.

When a shape is imprinted onto a solid, it becomes a(n) ______________________________ subobject.

Face

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

Faces, edges, and body

A raytraced shadow can be set to have either sharp or fuzzy edges.

False

A visual style cannot be set current using the Visual Styles Manager; either the ribbon or the command line must be used.

False

A weblight is like a targeted point light, but the point light is photometric.

False

AutoCAD can import and export stereolithography (STL) files, which allows exchange of solid model data and the creation of rapid prototypes.

False

AutoCAD has the following types of lighting: sunlight, user-created lights, default lighting, and ambient light.

False

Drawing views created with the VIEWBASE command must be created in model space.

False

Falloff and attenuation are the same thing, just as hotspot and intensity are the same thing.

False

If you exit the 3DWALK or 3DFLY command, re-enter the command, and begin recording, the new animation segment is appended to the previously saved segment.

False

In a walkthrough animation, the viewer is free to move in the X, Y, and Z directions.

False

Mesh objects can be directly edited using the SOLIDEDIT command.

False

Nonplanar surfaces on a solid object can be extruded or offset using the SOLIDEDIT command.

False

Once lights are added to the scene, they cannot be renamed.

False

Self illumination is the effect of a material producing illumination; setting it too high can add too much light to the scene.

False

The 3DWALK, 3DFLY, and ANIPATH commands require an existing camera.

False

What must be enabled for the Mapped Object Shadows setting (full shadows) in a visual style to have an effect?

Hardware acceleration.

Which of the following questions is not relevant when planning an animation?

Has SHOWMOTION been used to set up shots?

Once a camera is created, it can be given a unique name using the Properties palette.

True

The Jitter and Line Extensions properties of a visual style can be used to make objects in the scene appear hand-sketched.

True

The SOLIDEDIT command allows the faces, edges, and body of a solid to be edited.

True

The VIEWSECTION command can be used to create a section view by picking points or selecting an existing object to define a section line.

True

The Visual Styles Manager is used to create and manage visual styles.

True

The basic difference between the 2D Wireframe and Wireframe visual style is that the Wireframe visual style displays the shaded UCS icon.

True

The default AutoCAD visual styles can be altered.

True

The material type determines the properties available in the material definition.

True

Using the SOLIDEDIT command, a face on a solid can be extruded in a straight line that is not perpendicular to the original face.

True

When tapering a face on a solid using the SOLIDEDIT command, a positive taper angle always removes material.

True

When using the SOLIDEDIT command to delete a face that is a chamfered or filleted edge on a solid, the adjacent edges are extended to fill the gap.

True

When using the SOLIDEDIT command to extrude a face, entering a negative extrusion height subtracts material.

True

When creating a flyby animation, which of the following keys is used to move forward in the scene?

[W]

The location where material definitions are stored is called ____.

a materials library

A mapped material has a map applied to at least one component of its definition.

True

A model without shadows appears obviously fake.

True

A rendered image can be saved to a file from the Render window.

True

Except for which command is used, the process for creating a walkthrough animation is the same as for creating a flyby animation.

True

Glossiness is a measure of the surface roughness of a material.

True

Live sectioning can be used on solids, surfaces, and regions, provided a section object is created to cut through the object.

True

The difference between the visual style Lighting quality property Smooth setting and Faceted setting is that Faceted produces a display in which the surface of 3D objects is represented by a series of ______________________________.

flat faces

The SECTIONPLANE command creates a section object to cut a solid, while ______________________________ is enabled to actually cut the solid.

live sectioning or LIVESECTION

If inverse square attenuation is used, what should the intensity of a point light be set to if the light is 4 units from the nearest object?

16

Which of the following are default visual styles available in AutoCAD?

2D Wireframe, Wireframe, Hidden, Conceptual, and Realistic.

Which command is used to create a walkthrough animation?

3DWALK

If an animation is to be played back on a computer at 30 fps, how many frames does an animation three minutes in length contain?

5400

What does a section plane, or section object, allow?

?? Question 11, not "None of the above."

The refraction index of water is ______________________________.

??? Question 26

______________________________, when enabled, occurs when a camera or target slows down as it approaches corners and curves on a path.

???? Question 43

The ______________________________ button in the Render panel on the ribbon allows a small area of the model to be rendered instead of the entire scene.

????? Question 18

The ______________________________ command creates an animation that is not constrained to a single Z value.

????? Question 41

Which of the following statements about shadows is not true?

A raytraced shadow has fuzzy edges.

What is live sectioning?

A tool that allows the viewing of internal features of 3D solids, surfaces, and regions that are cut by a section object.

Which command is used to constrain a camera's movement to a path?

ANIPATH

Instead of providing ______________________________ light, AutoCAD relies on indirect illumination.

Ambient

______________________________ color is the color of the object in shadows.

Ambient

Which of the following is like natural light just before sunrise?

Ambient Light

Of the types of lighting in AutoCAD, ______________________________ cannot produce shadows when the scene is rendered.

Any of the following... default lighting default lights default

Which of the following visual styles can be deleted from the Visual Styles Manager?

Any user-created visual style.

To select a single face for use with the SOLIDEDIT command, pick inside the ______________________________ of the face.

Boundary or edges

Which system variable controls the visibility of camera glyphs?

CAMERADISPLAY

Using the SOLIDEDIT command, which of the following are editing operations that can be performed on the edge of a solid?

Copying, deleting, moving, and changing the color.

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

Create a named view.

Which of the following statements regarding cameras is true?

Creating a camera requires the location of the viewer and the location of the point being viewed.

Which of the following system variables controls whether or not a silhouette of solids is displayed?

DISPSILH

Which of the following is not created when placing a section view?

Detail boundary

Which of the following provides illumination much like the sun?

Distant light.

Which of the following statements regarding distant lights in AutoCAD is not true?

Distant lights are used to replicate theater lighting.

Which of the following methods can be used to attach materials?

Drag a material from the materials browser and drop it onto an object in the scene. Use the Material Attachment Options dialog box to attach materials by layer. With an object selected, right-click on the material in the materials browser and select Assign to Selection from the shortcut menu. ======> All of the above.

The ambient color in a material definition is only used when the scene is illuminated by ambient light.

False

The predominant color of a material is the specular color.

False

The target plane passes through the camera and is from where the camera's front and back clipping planes are established.

False

When creating a detail view, the section view style controls the appearance of elements in the detail identifier and detail view label.

False

When creating a multiview layout of a solid model, SOLDRAW must be used before SOLVIEW.

False

Which option of the VIEWBASE command is used to set the display style of the base view?

Hidden Line

Which of the following methods can be used to add a visual style to a tool palette?

Highlight the visual style in the Visual Styles Manager and pick the Export the Selected Visual Style to the Tool Palette button. Right-click on the visual style thumbnail in the Visual Styles Manager and select Export to Active Tool Palette from the shortcut menu. Drag the visual style thumbnail from the Visual Styles Manager and drop it on the tool palette. :) =====> All of the above.

In the Plot dialog box, what should be selected to plot a solid model in a specified visual style?

If the visual style is current in the viewport, select As displayed.

What are the main components of the Render window?

Image pane, history pane, and statistics pane.

The clean option of the SOLIDEDIT command removes all of the following, except ____.

Imprinted Objects

What is a flyby animation?

It shows a scene as a bird would view it flying through the scene (variable Z value).

What is a walkthrough animation?

It shows a scene as a person would view it walking through the scene (constrained Z value).

What is the function of a camera?

It stores a viewpoint that can be recalled.

In order for full shadows to be displayed, at least one ______________________________ must be added to the scene.

Light

All lights that have been added to a scene can be managed using the ____.

Lights in Model palette

Which of the following maps is a 3D map mathematically generated based on specified colors and values?

Marble.

Which visual style property determines if materials and textures are displayed on objects when the visual style is set current?

Material display.

Which of the following statements is not true regarding the materials browser?

New materials are created in it.

What is photometric lighting?

Physically correct illumination that attenuates at the square of the distance from the source.

A standard ______________________________ light in AutoCAD has rays that project in all directions.

Point

Which of the following lights is represented by a light glyph in AutoCAD?

Point lights.

Which of the following render presets available in AutoCAD creates the highest-quality rendering?

Presentation.

Which type of material map is a 3D map mathematically generated based on specified colors and values?

Procedural.

Picking the ______________________________ button in the Animations panel on the ribbon starts recording the walkthrough or flyby animation.

Record Animation

When a face on a solid is rotated using the SOLIDEDIT command and two points are selected to define the axis of rotation, what effect does a positive rotation angle have?

Rotation is clockwise looking from the first pick point to the second.

______________________________ is a measure of the polish on a surface.

Roughness

The ______________________________ command is used to create a multiview layout prior to constructing finished profile or section views with the SOLDRAW command.

SOLVIEW

Which series of commands is used to generate a multiview layout of a solid object and in which order must they be used?

SOLVIEW, SOLDRAW, and SOLPROF.

A section object is in one of three states:

Section plane state, section boundary state, and section volume state.

The ______________________________ option of the SOLIDEDIT command creates a hollowed-out solid with a specified wall thickness.

Shell

If the Line Extensions and Jitter properties are not available in the Visual Styles Manager, the ______________________________ property in the Edge Settings category must be changed to a different setting.

Show

Which of the following lights can cast shadows?

Sunlight.

What is the custom material that I presented at Autodesk University?

Taylor Made golf ball package

Which of the following statements about intersection edge settings in a visual style is false?

The color of the intersecting edge cannot be changed.

when a face on a solid is extruded using the SOLIDEDIT command, which of the following is true?

The extrusion can be straight The extrusion can be tapered The extrusion can follow a path =====> All of the Above

When a face on a solid is deleted using the SOLIDEDIT command, what happens to the original solid?

The face is removed from the solid and existing faces are extended to fill the gap.

Which of the following statements is not true?

The falloff of a light must be lower than the hotspot.

If the Opacity face setting for a 3D visual style is set to -60, what is the effect in the viewport?

The opacity is set, but not displayed in the viewport.

When a face on a solid is copied using the SOLIDEDIT command, what happens to the original solid?

The original solid is unaffected because the face is copied as a region.

From what point are the front and back camera clipping planes established?

The target plane.

When a face on a solid is tapered using the SOLIDEDIT command and a negative taper angle, what happens to the original solid?

The volume is increased.

What is the function of camera clipping planes?

They determine what portion of the scene will be shown in the view.

What is the purpose of the Check option of the SOLIDEDIT command?

To determine if the selected object is a valid 3D solid.

When would the separate option of the SOLDEDIT command be used?

To remove a primitive subobject from the composite solid.

______________________________ is a quality of transparent and semitransparent materials that causes light to be diffused (scattered) as it passes through the material.

Translucency

A 2D block can be generated representing the intersection of a solid object and the section object.

True

A background in a scene can be a solid color, gradient of colors, image file, the sun and sky, or the current drawing background color.

True

A camera's field of view can be edited using grips.

True

Custom materials are only available in the drawing in which they were created, unless saved to a library.

True

In order to use the Separate option of the SOLIDEDIT command, the selected solid must have multiple lumps.

True

Surface curvature analysis is conducted using the ANALYSISCURVATURE command.

True

The two types of attenuation are inverse linear and inverse square.

True

When using the SOLIDEDIT command, ______________________________ faces are selected if an edge is picked.

Two

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

Using the Properties palette, change the Material property to Global.

The ______________________________ command is used to edit section views and detail views.

VIEWEDIT

Which command is used to create a section view style?

VIEWSECTIONSTYLE

The default type of projection used for placing orthographic views with the VIEWBASE command is set with the ______________________________ command.

VIEWSTD

The ______________________________ system variable setting determines whether drawing views are updated automatically when model changes are made.

VIEWUPDATEAUTO

What is the purpose of the Camera Preview window?

When a camera is selected, it shows the view through the camera.

The ______________________________ command creates 2D objects based on the edges of a selected solid object.

XEDGES

The angle at which light rays strike an object is the ____.

angle of incidence

The ______________________________ is the area within the camera's vision.

field of view

Point lights, spotlights, and weblights are represented in AutoCAD by ______________________________ in the viewports.

light glyphs

Motion path animation involves ______________________________ a camera or target to points or paths.

linking

Surfaces that are not smooth have a low specular factor and are called ______________________________ surfaces.

matte

In order to set the color of sunlight, ___________________________________________ lighting must be off.

not "default"

Material mapping refers to ____.

specifying how a mapped material is applied to an object

The lights available in AutoCAD are ____.

sunlight, user-created lighting, and default lighting