Computer Aided Design | CAD Interview Question and Answers

The CAD jobs interview involve a brief test using their CAD software. They had me make a part from a drawing, or physical object. By watching over your shoulder, that usually tells them all they need to know about your CAD experience and computer literacy.

Remember that since every company has a different setup with their CAD software, PDM system, and documentation procedures, they’re not worried about you doing the task perfectly. Usually they’re watching to see what you do when you run into a task you don’t know how to solve.

The biggest thing to do (and this is true for most interview questions, in my opinion) is to be honest about your skills and knowledge. If they want you to use the sheet metal tool in Solidworks, for example, but you haven’t touched sheet metal tools in years, tell them that. They’re expecting to have to train you to do things their way, show them that you’re ready to listen instead of just trying to bluff through the test.

CAD Interview Question and Answers

1 . What is conceptualization in design process?

A Concept Study is the stage of project planning that includes developing ideas and taking into account the all features of executing those ideas. This stage of a project is done to reduce the likelihood of assess risks, error and evaluate the potential success of the planned project.

2. Define concurrent engineering.

In concurrent engineering, various tasks are handled at the same time, and not essentially in the standard order. This means that info found out later in the course can be added to earlier parts, improving them, and also saving time.
Concurrent engineering is a method by which several groups within an organization work simultaneously to create new products and services.

3. .Describe Computer Aided Design.

CAD is the function of computer systems to support in the creation, modification, analysis, or optimization of a design. CAD software is used to raise the productivity of the designer, progress the quality of design, progress communications through documentation, and to generate a database for manufacturing

4. State the importance of Computer Architecture in CAD.

In CAD, Computer architecture is a set of disciplines that explains the functionality, the organization and the introduction of computer systems; that is, it describes the capabilities of a computer and its programming method in a summary way, and how the internal organization of the system is designed and executed to meet the specified facilities.

5. What is ‘Rendering’?

Rendering is the making of a two dimensional image from a three dimensional model by means of computer programs. A picture file has objects in a strictly defined data structure; it would have information of geometry, lighting, viewpoint, texture, and shading as a description of the scene.

6. What do you understand by the term ‘Texture Mapping’?

Texture mapping is a system for providing detail, surface texture and color to a computer generated graphic model. A texture map is used to the surface of a polygon. This process is like to sticking patterned paper to a plain white paper. Multi texturing is the use of more numbers of textures at a time on a polygon.

7. Write down ‘Free form surface’

Freeform surface is used in CAD and other computer graphics software to describe the skin of a 3D geometric element. Freeform surfaces do not have rigid radial dimensions, unlike regular surfaces such as planes, cylinders and conic surfaces.

8. What is CGS ?

Constructive solid geometry (CSG) is a method used in solid modeling for creating 3D models in CAD. Constructive solid geometry permits a modeler to make a complex surface by applying
Boolean operators to join objects. Frequently CSG presents a model/surface that appears visually complex, but is essentially little more than cleverly combined.

9. List out techniques of assembly modeling.

Bottom-up assembly model
Top-down assembly model

10. list out the advantages of Tolerance Analysis

1. Accurate part assembly.
2. Elimination of assembly rework
3. Improvement in assembly quality.
4. Reduction of assembly cost.
5. High customer satisfaction.
6. Effectiveness of out-sourcing.

11. List out the various standards in graphics programming

IGES (Initial Graphics Exchange Specification)
DXF (Drawing / Data Exchange Format)
STEP (Standard for the Exchange of Product model data)