CDT Sectional Views & Auxiliary Views 2

Question 1

What is an offset section?

Accepted Answer

A section that uses a stepped cutting plane to pass through multiple features not in the same plane

Answer

An offset section uses a cutting plane that bends or steps to pass through several features lying in different planes, combining them into a single informative section view.

Question 2

What is a revolved section used for?

Accepted Answer

To show the cross-sectional shape of an elongated feature such as a spoke or rib by rotating it 90° in place

Answer

A revolved section shows the cross-sectional shape of a long feature like a spoke or handle by rotating the cross-section 90° directly onto the view rather than placing it elsewhere on the sheet.

Question 3

How does a removed section differ from a revolved section?

Accepted Answer

A removed section is placed at a separate location on the drawing rather than rotated in place on the view

Answer

While a revolved section is rotated 90° directly on the feature, a removed section is placed at a separate, clearly labeled location on the drawing for better readability.

Question 4

At what angle are standard general-purpose section lines (hatching) typically drawn?

Accepted Answer

At 45° to the principal lines of the view outline

Answer

Per ANSI/ASME Y14.3, general section lines are drawn at 45° to the principal lines of the view to clearly distinguish cut material without conflicting with horizontal or vertical object lines.

Question 5

Why are thin features such as ribs and webs typically left unhatched even when the cutting plane passes through them?

Accepted Answer

Hatching them would falsely suggest a heavy solid cross-section, misrepresenting their structural role

Answer

Leaving ribs and webs unhatched prevents the false impression that they are solid masses, helping readers correctly understand their function as thin stiffening elements.

(CDT) Certified Drafting Technician Practice Test

(CDT) Certified Drafting Technician Practice Test

CDT Sectional Views & Auxiliary Views 2