AIT Blueprint Reading 2

Question 1

On a mechanical drawing, what does a hidden line typically look like?

Accepted Answer

A dashed or short-dash line

Answer

Hidden lines are represented by dashed (short-dash) lines to show edges or features not visible from the current view.

Question 2

What is the purpose of a title block on a blueprint?

Accepted Answer

To provide project identification, scale, revision number, and drawing details

Answer

The title block contains essential drawing information including the project name, drawing number, scale, revision history, and designer's name.

Question 3

What does the term 'scale 1:10' mean on a blueprint?

Accepted Answer

One unit on the drawing equals 10 units on the actual object

Answer

A scale of 1:10 means one unit of measurement on the drawing represents 10 units on the real object.

Question 4

Which symbol on a weld blueprint indicates a fillet weld?

Accepted Answer

A right triangle

Answer

A right triangle (fillet) symbol placed on the reference line of a welding symbol indicates a fillet weld.

Question 5

In blueprint reading, what does 'OC' or 'O.C.' stand for?

Accepted Answer

On Center

Answer

'OC' stands for 'On Center,' indicating the distance measured from the center of one structural member to the center of the next.

(AIT) Apprenticeship and Industry Training Practice Test