CAD CAD Specialist Mechanical Design and Manufacturing

Question 1

In mechanical CAD, what does GD&T stand for?

Accepted Answer

Geometric Dimensioning and Tolerancing

Answer

GD&T stands for Geometric Dimensioning and Tolerancing, the standard system for defining allowable variation in part geometry.

Question 2

Which GD&T symbol represents 'flatness' on a mechanical drawing?

Accepted Answer

Two parallel horizontal lines

Answer

Flatness is represented by two parallel horizontal lines in GD&T and controls how flat a surface must be.

Question 3

In Autodesk Inventor or SolidWorks, what is a 'mate' constraint used for when assembling parts?

Accepted Answer

Defining a geometric relationship that positions two parts relative to each other

Answer

Mate constraints in mechanical CAD assemblies define the positional and angular relationships between two components.

Question 4

What is a bill of materials (BOM) in the context of a mechanical CAD assembly drawing?

Accepted Answer

A structured list of all parts and components in an assembly with quantities

Answer

A BOM is a structured table in an assembly drawing listing every part, its part number, description, and quantity required.

Question 5

Which drawing view type in mechanical CAD shows the interior features of a part by cutting through it with a defined cutting plane?

Accepted Answer

Section view

Answer

A section view reveals internal features of a part by showing the cross-section along a defined cutting plane.

(CAD) Certified Computer-Aided Design Specialist Practice Test