DMD Computer-Aided Design (CAD) & Simulation 2

Question 1

Which tolerance analysis method guarantees assembly by assuming all individual part tolerances simultaneously reach their extreme limits?

Accepted Answer

Worst-Case Tolerance Analysis

Answer

Statistical Tolerance Analysis (RSS)

Answer

Monte Carlo Simulation

Answer

Six Sigma Tolerance Design

Question 2

In CAD-based motion simulation, what is a 'degree of freedom' (DOF)?

Accepted Answer

An independent way a rigid body can move or rotate in space

Answer

The number of manufacturing operations required for a part

Answer

The amount of design variation allowed in a model

Answer

The precision level of a CNC machine

Question 3

What is the primary advantage of using a digital twin during product development and operation?

Accepted Answer

Enables real-time monitoring and simulation of a product's physical behavior

Answer

Eliminates the need for physical testing entirely

Answer

Reduces CAD file storage requirements

Answer

Automatically generates manufacturing drawings

Question 4

In simulation mesh generation, what does increasing 'mesh density' directly affect?

Accepted Answer

Both solution accuracy and computational time required

Answer

The visual appearance of the final rendered model

Answer

The color mapping of stress results

Answer

The file format compatibility of simulation results

Question 5

Which CAD feature allows multiple design variants (e.g., different sizes or options) to coexist within a single CAD file?

Accepted Answer

Design configurations

Answer

Feature tree suppression

Answer

Layer management

Answer

Reference geometry

Question 6

What is the purpose of a 'tolerance stack-up analysis' in assembly design?

Accepted Answer

Determining whether accumulated dimensional variations will allow proper assembly function

Answer

Verifying that individual parts meet their standalone tolerance specifications

Answer

Calculating the total manufacturing cost of tolerance-controlled features

Answer

Identifying which features require the tightest tolerances

Question 7

In structural simulation, which boundary condition type defines how a model is physically supported or attached to its surroundings?

Accepted Answer

Constraints and fixtures

Answer

Material property definitions

Answer

Mesh element type

Answer

Load application settings