AIT Technical Drawing 2

Question 1

What does a hidden line represent in a technical drawing?

Accepted Answer

An edge or surface not visible from the current view

Answer

Hidden lines (dashed lines) represent edges or surfaces that exist but cannot be seen from the current viewing direction.

Question 2

Which type of section view is used when only one half of a symmetrical part needs to be shown in section?

Accepted Answer

Half section

Answer

A half section cuts away one quarter of a symmetrical object, showing the interior on one half and the exterior on the other.

Question 3

In GD&T, what does the flatness symbol control?

Accepted Answer

How flat a surface is regardless of any datum

Answer

Flatness controls all points of a surface to lie within two parallel planes and requires no datum reference.

Question 4

What is the purpose of a revision block on a technical drawing?

Accepted Answer

To record changes made to the drawing after original release

Answer

The revision block documents each change to a drawing, including the revision letter, description, date, and approval.

Question 5

A leader line on a technical drawing is used to:

Accepted Answer

Point from a note or symbol to the feature it describes

Answer

Leader lines connect notes, part numbers, or symbols to the specific feature or area they reference on the drawing.

(AIT) Apprenticeship and Industry Training Practice Test