CAD Specialist 3D Modeling and Design

Question 1

What is the primary purpose of 3D modeling in CAD?

Accepted Answer

Generate realistic three-dimensional objects

Answer

3D modeling in CAD is used to create three-dimensional representations of objects for engineering, architecture, and manufacturing applications.

Question 2

Which CAD feature is used to create a 3D model from a 2D shape?

Accepted Answer

Extrude

Answer

The 'Extrude' feature in CAD allows users to convert a 2D shape into a 3D object by adding depth.

Question 3

What is the function of the 'Revolve' command in 3D modeling?

Accepted Answer

Rotate a 2D profile around an axis to create a 3D shape

Answer

The 'Revolve' command creates a 3D object by rotating a 2D profile around a specified axis.

Question 4

Which file format is commonly used for saving 3D CAD models?

Accepted Answer

STL

Answer

STL files are widely used in 3D CAD modeling and 3D printing for storing geometric data.

Question 5

What is the benefit of parametric modeling in 3D CAD?

Accepted Answer

Allows easy modifications by adjusting parameters

Answer

Parametric modeling allows designers to create intelligent models where dimensions and features can be modified easily through parameters.

(CAD) Certified Computer-Aided Design Specialist Practice Test