CDT Quality Control & Inspection 3

Question 1

On a drawing using third-angle projection, the right-side view is placed:

Accepted Answer

To the right of the front view

Answer

In third-angle projection (standard in the US), the right-side view is projected to the right of the front view.

Question 2

A QC checklist item requires verifying that all surface finish symbols on a drawing are consistent with the specified manufacturing process. This is an example of:

Accepted Answer

Process-drawing compatibility review

Answer

Checking that surface finish callouts are achievable and consistent with the specified process is a process-drawing compatibility review.

Question 3

When a drawing tolerance stack-up analysis reveals that worst-case assembly clearance is negative, the correct response is to:

Accepted Answer

Tighten individual part tolerances or redesign to achieve positive clearance

Answer

A negative worst-case clearance means parts can physically interfere, requiring tighter tolerances or a design change before production.

Question 4

Which symbol on a GD&T drawing indicates that a cylindrical tolerance zone is to be applied?

Accepted Answer

The diameter symbol ⌀ preceding the tolerance value

Answer

Placing the diameter symbol ⌀ before a tolerance value in a feature control frame indicates a cylindrical (diametral) tolerance zone.

Question 5

During a CAD model QC review, a technician finds that the 3D model and the 2D drawing have conflicting hole depths. Which document is typically the governing authority under ASME Y14.41 model-based definition?

Accepted Answer

The 3D annotated model governs if designated as the master

Answer

Under ASME Y14.41, when a 3D annotated model is designated as the master reference, the model dataset takes precedence over 2D derived drawings.

(CDT) Certified Drafting Technician Practice Test

(CDT) Certified Drafting Technician Practice Test

CDT Quality Control & Inspection 3