OIT Blueprint Reading and Technical Drawing

Question 1

What does a hidden line (dashed line) represent in a technical drawing?

Accepted Answer

An edge or surface that is not visible from the current view

Answer

A surface that is visible from the current view

Answer

The centerline of a symmetrical object

Answer

A cutting plane for a section view

Question 2

On a blueprint, the scale notation '1:2' means which of the following?

Accepted Answer

1 unit on the drawing equals 2 units in real life

Answer

2 units on the drawing equal 1 unit in real life

Answer

The drawing is full size

Answer

The drawing has no defined scale

Question 3

What is the primary purpose of a title block on a technical drawing?

Accepted Answer

To provide key identification and reference information about the drawing

Answer

To show the front view of the object

Answer

To list all materials required for fabrication

Answer

To indicate the revision history only

Question 4

What type of view is created by passing an imaginary cutting plane through an object to reveal its internal features?

Accepted Answer

Section view

Answer

Auxiliary view

Answer

Isometric view

Answer

Elevation view

Question 5

In technical drawing, what does GD&T stand for?

Accepted Answer

Geometric Dimensioning and Tolerancing

Answer

General Drawing and Tolerance

Answer

Grade, Dimension, and Template

Answer

Global Design and Technology

Question 6

Which line type in technical drawing indicates the axis of symmetry or the center of a circular feature?

Accepted Answer

Chain line (alternating long and short dashes)

Answer

Solid thick line

Answer

Dashed thin line

Answer

Phantom line (long dash, two short dashes)

Question 7

In third-angle projection (used in North America), where is the front view typically located on the drawing sheet?

Accepted Answer

Center of the sheet with related views arranged around it

Answer

Top-left corner

Answer

Bottom-right corner

Answer

The front view is always the largest view shown