drafting final
name some of the preset isometric viewpoints in AutoCAD
Northeast, Northwest, SouthEast, SouthWest
What are the three basic types of 3D solids in AutoCAD?
Primitives, swept objects, and composites
what is a solid extrusion?
A solid extrusion is a(n) represents a solid object and has mass properties.
name some of the preset orthographic viewpoints in AutoCAD.
Top, Bottom, Left, Right, Front, Back.
true or false : A rendered image can be saved to a file from the Render window.
true
true or false : An extrusion, either surface or solid, can be constructed below or above the current XY plane.
true
true or false : Architectural molding can be created by first drawing the profile of the molding as a closed 2D shape, then extruding the profile.
true
true or false : There are four preset orthographic viewpoints.
true
true or false : There are six preset isometric viewpoints.
true
Which command and option is used to restore the WCS, regardless of the current UCS?
when an orthographic view is restored
When is a camera automatically created?
when you select a motion path
what are the coordinates required to locate any point in 3D space?
x, y, z
The UCS icon is a symbol that ________.
the orientation of the coordinate system
Which of the following are default visual styles available in AutoCAD?
2D Wireframe, Conceptual, Hidden, Realistic, Shaded, Shaded with Edges, Shades of Gray, Sketchy, Wireframe, and X-Ray
Which of the following commands allows an object to be rotated, moved, and scaled in one operation?
3DALIGN/ALIGN
Which of the following commands produces a continuous 3D orbit?
3DCORBIT
Which command is use to place a round on the edge of a solid?
3DFILLET and FILLET
Which of the following commands is used to mirror objects about any plane, regardless of the current UCS?
3DMIRROR
Which of the following commands allows an object to be moved along any plane of the current UCS?
3DMOVE
Which command is active when the rotate gizmo is displayed?
3DROTATE
Which light is like natural light just before sunrise?
Ambient light
Which type of mathematical calculations are used in the construction of solid models?
Boolean Operations
How is a model space viewport made active?
By clicking inside or on the border of the viewport
Which light provides illumination much like the Sun?
Distant light
How is text given a thickness?
It can be applied to text after it is created in Properties platte. The thickness setting is located in the General section.
Which command is active when the move gizmo is displayed?
MOVE command
Which command allows you to dynamically change your viewpoint using an on-screen cube icon?
NAVVCUBEDISPLAY
Which of the following is considered the most realistic presentation of a model?
Realistic visual style.
what is required to create a sweep?
Requires at least two objects: Shape to be swept and a 2D or 3D shape to be used as the sweep path.
What is a hidden display?
Suppresses the display of lines that would normally be hidden.
Which commands are used to create text that can then be given a thickness?
TEXT or DTEXT command
What is a face style for a 3D visual style?
The Face style property controls the VSFACESTYLE system variable.
What is the purpose of materials browser?
To find, navigate and manage materials for an object.
What does the ZAxis option of the UCS command allow?
To select the origin point and a point on the positive Z axis.
What are the 3D construction techniques? When creating a 3D model what are the various commands that can be used to create the model? Explain how each command is used.
Visualization skills can be obtained by using 3D techniques to construct objects and by trying to see two-dimensional sketches and drawings as 3D models. right-hand rule - helps you visualize the axes primitives - box, torus, wedge, sphere, cylinder, pyramid properties - select the objects and edit 3dmove - displays the 3D Move gizmo to aid in moving 3D objects a specified distance in a specified direction. 3dorbit - Rotates the view 3dscale - displays the 3D Scale gizmo to aid in resizing 3D objects. 3drotate - displays the 3D Rotate gizmo to aid in revolving 3D objects around a base point. convtomesh - Converts 3D objects such as polygon meshes, surfaces, and solids to mesh objects. convtosolid - Converts eligible 3D objects to 3D solids. convotosurface - Converts objects to 3D surfaces. extrude - Creates a 3D solid from an object that encloses an area, or a 3D surface from an object with open ends. loft - Creates a 3D solid or surface in the space between several cross sections. sweep - Creates a 3D solid or 3D surface by sweeping a 2D object or subobject along an open or closed path. revolve - Creates a 3D solid or surface by sweeping an object around an axis. vports - Creates multiple viewports in model space or in paper space
The PLANESURF command creates what?
a Planar Surface.
The SOLIDEDIT command allows editing of what parts of a solid?
allows you to edit faces, edges, or the entire body of the solid
Name the lights available in AutoCAD
ambient light, point light, target point light, distant light, spotlight, free spotlight, weblight, and free weblight.
In order to add fog or depth cueing to a scene, what must first be done?
answer this...
Define the term and sketch a picture to represent the definition: union
command is used to combine solid objects
Define the term and sketch a picture to represent the definition: subtract
command that allows you to remove the volume of one or more solids from another solid
Define the term and sketch a picture to represent the definition: slice
command that creates a thin cut (slice) through the 3D model
true or false : A countersink is similar to a counterbore with straight sides.
false - angled sides
What is the function of the PLAN command?
it allows you to create a plan view of any user coordinate system (WCS).
What is a loft?
it's an object created by extruding between two or more profiles.
A ________ projection has receding lines that converge, while a(n) projection has receding lines that are ____________.
radial & parallel
If the 2D Wireframe visual style is current when the 3DROTATE Or 3DMOVE command is entered, what happens to the display?
the visual style is temporarily changed to the Wireframe visual style because the gizmo is not displayed in 2D mode.
true or false : A background in a scene can be a solid color, gradient of colors, bitmap file, the sun and sky, or the current drawing background color.
true
true or false : A boss is raised above the surface of an object and can serve as a seating surface for a fastener.
true
true or false : A solid extrusion has mass properties, but a surface extrusion does not.
true
true or false : A wireframe object is a type of display in which all lines are visible.
true
true or false : After the SLICE command is used, the history of the solid must be reset in order to retain it.
true
true or false : Custom materials are only available in the drawing in which they were created, unless saved to a library.
true
true or false : The Jitter and Line Extensions properties of a visual style can be used to create a hand-sketched display of the objects in the scene.
true
true or false : The VPORTS command opens the Viewports dialog box in which the current viewport configuration can be saved (named).
true
true or false : There are eight solid primitives in AutoCAD.
true
true or false : To create an extrusion that tapers out from the base (increases in size), enter a taper angle greater than 90°.
true
What is a primitive in AutoCAD?
A building block you can use to create a 3d object.
Define the term and sketch a picture to represent the definition: taper
A positive taper angle always removes material. A negative taper angle always adds material.
What is a surface model?
A surface model is a thin shell that has no mass or volume
What is a solid model?
A volume that represents a 3d object
Which commands is used to convert a surface object into a solid object?
CONVTOSOLID
Which of the following object types can be extruded into a solid?
Closed objects, such as, circles, polygons, closed polylines, and donuts.
What is a sweep?
It's an object created by extruding a single profile along a path object
What are the three components of a rectangular 3D array?
Levels, columns, rows
Which of the following shapes can be revolved into a surface?
Open curves and line segments.
List three material types in AutoCAD?
Paint, Roofing, Siding
Which lights is represented by a light glyph in AutoCAD?
Point light
What does it mean to say that AutoCAD is a parametric solid modeling program?
Some of a solid's properties are parameters
What is the history of a composite solid?
The history of a composite solid construction. Graphically displays all of the geometry that was used to create the model.
Which objects can be converted into a region?
The objects that can be converted into a region are splines, polylines, circles
Properties of a 3D solid are modified using the Properties palette. How is this palette displayed?
Using the properties command
what is a viewpoint
a point of view
Define the term and sketch a picture to represent the definition: chamfer
a small square edge
what is a helix?
a spline in the form of a spiral and can be created as a 2D or 3D object
Give two true statements about Revolutions
answer this...
Which command is used to create a solid cube?
box
Define the term and sketch a picture to represent the definition: extrude
command allows you to create extrusions from lines, arcs, elliptical arcs, 2D and 3D polylines, 2D and 3D splines, circles, ellipses, 2D solids, 3D solid faces and edges, regions, planar surfaces, surface edges, and donuts
the right-hand rule is used for what?
identify the three axes
What methods can be used to attach materials?
drag the materials from the materials browser the MATERIALATTACH command attach by layer
true or false : A helix cannot be used as a shape for a sweep, but can be used as a path for a sweep.
false
true or false : By slicing a solid with a surface in the shape of a stamped part, a mating die can be created.
false
true or false : Model space viewports must be rectangular, but can overlap.
false
true or false : The PLAN command can be used to restore a view parallel to any saved UCS.
false
true or false : The fundamental difference between a sweep and a loft is the use of guide curves in a sweep.
false
true or false : The view cube can be used to change the display between a perspective and parallel projection.
false
To add a background to a scene, what must first be done?
select the background button to display the image based lighting background dialog box
what are the three types of Boolean operations?
subtract, add, and intersect.
the ribbon and its panels are used for what?
to design and view a 3d model
What is the easiest way to remove a material from an individual object?
using the properties pallatte