IST Blueprint Reading and Technical Drawings

Question 1

What type of line in a technical drawing represents the visible outline or edge of an object?

Accepted Answer

Object line (visible line)

Answer

Hidden line (dashed)

Answer

Centerline (alternating dashes)

Answer

Section line

Question 2

What do dashed lines represent in a technical drawing?

Accepted Answer

Edges or features hidden behind a visible surface

Answer

The axis of symmetry of a cylindrical feature

Answer

Cutting plane locations

Answer

Dimension reference lines

Question 3

In blueprint reading, what does the abbreviation 'OD' stand for?

Accepted Answer

Outer Diameter

Answer

Object Dimension

Answer

Overall Depth

Answer

Original Drawing

Question 4

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

Accepted Answer

To provide part name, material, scale, revision history, and other identifying information

Answer

To show the main orthographic view of the part

Answer

To list required safety warnings

Answer

To indicate which tools are needed to manufacture the part

Question 5

What does the scale notation '1:2' on a technical drawing mean?

Accepted Answer

The drawing is half the actual size of the object

Answer

The drawing is twice the actual size of the object

Answer

One inch on the drawing represents two feet in reality

Answer

Two separate drawings represent one complete part

Question 6

In a standard multi-view (orthographic) drawing, which view shows the object as seen directly from the front?

Accepted Answer

Front view

Answer

Top view

Answer

Right side view

Answer

Auxiliary view

Question 7

What does a centerline (alternating long and short dashes) indicate in a technical drawing?

Accepted Answer

The axis of symmetry or center of a hole, cylinder, or symmetric feature

Answer

The drawing boundary or border

Answer

A hidden internal edge

Answer

A leader line pointing to a note