CAD CAD Specialist Mechanical Design and Engineering 3

Question 1

What is the purpose of a 'revision block' on an engineering drawing?

Accepted Answer

Tracking changes made to the drawing after initial release, including revision letter, description, and date

Answer

A revision block records the history of changes to a drawing after its initial release, tracking each revision with a letter, description, date, and approver.

Question 2

What does 'FEA' stand for in mechanical CAD simulation?

Accepted Answer

Finite Element Analysis

Answer

FEA (Finite Element Analysis) is a computational method that divides a model into small elements to simulate stress, strain, thermal, and other physical behaviors.

Question 3

In mechanical CAD, what is a 'loft' feature?

Accepted Answer

A feature that blends between two or more profiles at different locations to create a complex shape

Answer

A loft creates a smooth transition between two or more cross-sectional profiles at different locations, producing complex organic or aerodynamic shapes.

Question 4

What is 'sheet metal flat pattern' used for in CAD?

Accepted Answer

Generating a 2D drawing of a formed sheet metal part as if unfolded flat for cutting

Answer

A sheet metal flat pattern unfolds a formed sheet metal part into its flat blank shape, which is used for CNC laser or punch cutting before bending.

Question 5

In mechanical design, what is the purpose of a 'counterbore' hole?

Accepted Answer

A hole that widens at the top to allow a flat-headed screw to sit flush or below the surface

Answer

A counterbore is a cylindrical flat-bottomed enlargement at the top of a hole, allowing a socket head cap screw or bolt head to sit flush or below the part surface.

(CAD) Certified Computer-Aided Design Specialist Practice Test

(CAD) Certified Computer-Aided Design Specialist Practice Test

CAD CAD Specialist Mechanical Design and Engineering 3