AutoCAD Drawing Tools 5 — Questions and Answers
Question 1: When would you use the BOUNDARY command instead of the REGION command in AutoCAD?
- When you want to create a closed polyline from enclosed areas rather than a region object (Correct answer)
- When you need to perform Boolean operations on shapes
- When calculating mass properties of closed shapes
- When creating 3D extruded objects from 2D profiles
Correct answer: When you want to create a closed polyline from enclosed areas rather than a region object
BOUNDARY creates a closed polyline tracing an enclosed area, while REGION creates a mathematical 2D surface object suited for Boolean and mass property operations.
Question 2: Which option in the CIRCLE command allows you to draw a circle tangent to two existing objects with a specified radius?
- Ttr (Tangent, Tangent, Radius) (Correct answer)
- 2P (Two-Point)
- 3P (Three-Point)
- Tan, Tan, Tan
Correct answer: Ttr (Tangent, Tangent, Radius)
The Ttr option lets you select two tangent objects and specify the radius, and AutoCAD calculates the circle's center automatically.
Question 3: In the context of the PLINE command, what does the 'Arc' option switch to?
- Arc segment mode, where subsequent segments are drawn as arcs instead of straight lines (Correct answer)
- The ARC command, exiting PLINE
- An arc approximation mode using short line segments
- A circular polyline drawing mode
Correct answer: Arc segment mode, where subsequent segments are drawn as arcs instead of straight lines
Typing A during PLINE activates arc segment mode; type L to switch back to line segment mode without exiting the command.
Question 4: What is the function of the SKETCH command in AutoCAD?
- Creates freehand lines by recording cursor movement as a series of line segments (Correct answer)
- Creates a rough draft layer separate from the final drawing
- Generates a preliminary wireframe from solid objects
- Converts raster images to vector lines automatically
Correct answer: Creates freehand lines by recording cursor movement as a series of line segments
SKETCH records freehand cursor movement as a series of short line segments or splines, useful for irregular organic shapes.
Question 5: When you use OFFSET on a closed polyline rectangle, what happens to the corners of the offset result?
- The corners are automatically mitered (extended to intersect) (Correct answer)
- The corners become rounded arcs
- The corners are left open and must be closed manually
- The corners are chamfered at 45 degrees
Correct answer: The corners are automatically mitered (extended to intersect)
AutoCAD automatically extends or trims the offset segments at corners to maintain a clean, closed shape with mitered corners.
Question 6: What does the 'Undo' option within the PLINE command do differently from pressing Ctrl+Z?
- Removes only the last polyline segment while keeping the command active (Correct answer)
- Undoes all polyline segments drawn in the current command
- Exits the polyline command and undoes the entire polyline
- Undoes the last two segments simultaneously
Correct answer: Removes only the last polyline segment while keeping the command active
Typing U inside PLINE removes just the last segment and lets you continue drawing, while Ctrl+Z exits the command and undoes the last action.
Question 7: Which AutoCAD tool creates a series of objects that maintain an associative link, updating automatically when the source object changes?
- Associative Array (ARRAY command) (Correct answer)
- COPY with Multiple
- BLOCK with attributes
- GROUP command
Correct answer: Associative Array (ARRAY command)
AutoCAD's associative ARRAY creates a pattern where all copies update automatically if the source object or array parameters are modified.
AutoCAD Drawing Tools 5
When would you use the BOUNDARY command instead of the REGION command in AutoCAD?