Which statement best describes the integration of 3D CAD and simulation?

• A. They enable creating rotatable models for viewing
• B. They are unrelated
• C. They require Internet access
• D. They only support 2D drawings

Answer: (B)

The important idea is that 3D CAD and simulation are combined to test a design virtually. Using the 3D CAD geometry as the basis for physics-based analysis lets you apply loads, heat, motion, and other conditions and see how the part or assembly responds—stresses, deformations, temperatures, and dynamic behavior—without building physical prototypes.

This integration enables digital prototyping and design optimization, speeding up the development process and helping catch issues early. The notion that CAD and simulation are unrelated doesn’t reflect how modern workflows work, where geometry directly feeds the simulation model. Features like rotatable viewing are CAD capabilities, not the integration itself; needing Internet access isn’t a requirement for offline simulation, and 3D CAD plus simulation typically go beyond 2D drawings, leveraging 3D geometry for accurate analysis.