⭐ AutoCAD Interview Questions and Answers (Beginner to Advanced)

1. What is AutoCAD?

Answer: AutoCAD is a Computer-Aided Design (CAD) software developed by Autodesk used to create 2D drawings and 3D models for mechanical, civil, electrical, and architectural design.

2. What are the main features of AutoCAD?

Answer:

• 2D drafting & annotation
• 3D modeling & visualization
• Layers management
• Blocks & dynamic blocks
• Xrefs (External References)
• Parametric constraints
• File formats like DWG & DXF

3. What is the .DWG file format?

Answer: DWG is AutoCAD's native file format that stores drawings including geometry, data, and maps.

4. What is the difference between DWG and DXF?

Answer:

• DWG: Native format, high detail, mainly for AutoCAD.
• DXF: Text-based format, used for interoperability with other CAD software.

5. What is the use of the Layer command?

Answer: Layers help organize a drawing by separating components like dimensions, text, lines, blocks, etc. Layers control color, linetype, lineweight, visibility.

6. What are Blocks in AutoCAD?

Answer: Blocks are reusable drawing components like doors, nuts, bolts, symbols. They save time and maintain consistency.

7. What are Dynamic Blocks?

Answer: Dynamic blocks allow stretching, flipping, rotating, and scaling features without creating multiple block versions.

8. Difference between Move and Copy command?

Answer:

• Move: Relocates the object.
• Copy: Duplicates the object, leaving the original unchanged.

9. What is Ortho mode?

Answer: Ortho mode restricts cursor movement to horizontal and vertical directions (90°). Shortcut: F8

10. What is Polar Tracking?

Answer: Polar Tracking helps draw lines at specific angles (e.g., 30°, 45°, 60°). Shortcut: F10

11. What is OSNAP (Object Snap)?

Answer: OSNAP helps accurately pick points like endpoint, midpoint, center, intersection. Shortcut: F3

12. What is Xref?

Answer: Xref means External Reference, used to attach another drawing as a reference. Useful for team collaboration.

13. What is UCS in AutoCAD?

Answer: UCS (User Coordinate System) defines a user-specific X, Y, Z coordinate orientation in 2D/3D space.

14. What is the difference between Model Space and Paper Space?

Answer:

• Model Space: For drawing and designing (full scale).
• Paper Space: For layout, printing, title blocks, viewports.

15. What are Viewports?

Answer: Viewports allow displaying multiple views of the drawing on a single layout page.

16. What is the Fillet command?

Answer: Fillet creates a rounded corner between two lines.

17. What is the Chamfer command?

Answer: Chamfer creates a straight, angled corner between two lines.

18. What is the Trim command used for?

Answer: To remove unwanted parts of an object.

19. What is Extend command?

Answer: To lengthen a line up to a boundary edge.

20. What is the Offset command?

Answer: Offset creates parallel lines or curves at a specified distance.

21. What is Hatch in AutoCAD?

Answer: Hatch fills an enclosed area with patterns, solid colors, or gradients.

22. What is the Difference between Absolute and Relative Coordinates?

Answer:

• Absolute: Uses exact coordinates (X,Y).
• Relative: Based on last point (@X,Y).

23. Explain Array command.

Answer: Array creates multiple copies of objects in:

• Rectangular pattern
• Polar pattern
• Path pattern

24. What is the Purge command?

Answer: Purge removes unused layers, blocks, and styles to reduce file size.

25. How to measure distance in AutoCAD?

Answer: Use DIST or type DI to measure distance and angles.

26. What is the use of the Properties panel?

Answer: It displays and edits an object's color, layer, linetype, scale, geometry, etc.

27. What is the difference between Scale and Stretch?

Answer:

• Scale: Enlarges or reduces an object proportionally.
• Stretch: Changes part of the object's shape or length.

28. What is the use of the Match Properties tool?

Answer: Copies properties like color, layer, linetype, text style from one object to another.

29. What is Parametric in AutoCAD?

Answer: Parametric tools allow applying geometric and dimensional constraints to control object relationships.

30. What are Annotative objects?

Answer: They automatically adjust size (text, dimensions, hatch) based on drawing scale.