CDT Quality Control & Inspection 2

Question 1

When performing a dimensional check on a mechanical drawing, which tool is most appropriate for measuring an internal bore diameter to a tolerance of ±0.001 inch?

Accepted Answer

Bore micrometer

Answer

A bore micrometer provides the precision needed to measure internal diameters to within ±0.001 inch accuracy.

Question 2

A drawing checker finds that a title block lists 'SCALE: 1:2' but a dimension on the drawing does not match the scaled geometry. What is the correct QC action?

Accepted Answer

Flag a dimension-to-geometry discrepancy for the originator to resolve

Answer

A discrepancy between annotated dimensions and drawn geometry must be flagged to the originator, as the intent may be in either place.

Question 3

Which ASME standard governs the checking and interpretation of geometric dimensioning and tolerancing (GD&T) on engineering drawings?

Accepted Answer

ASME Y14.5

Answer

ASME Y14.5 is the standard that defines GD&T symbols, rules, and their interpretation on engineering drawings.

Question 4

During a drawing review, an inspector notices that a flatness callout has no datum reference. This is:

Accepted Answer

Acceptable — flatness is a form tolerance and requires no datum

Answer

Flatness is a form tolerance that controls a surface unto itself and therefore requires no datum reference per ASME Y14.5.

Question 5

A redline markup on a production drawing shows a hole moved 0.25 inch. Before releasing the revision, QC must verify that:

Accepted Answer

The hole's new position does not conflict with adjacent features or minimum edge distances

Answer

Moving a feature requires checking for interference with nearby features, wall thickness, and minimum edge-distance requirements.

(CDT) Certified Drafting Technician Practice Test

(CDT) Certified Drafting Technician Practice Test

CDT Quality Control & Inspection 2