ITMC Blueprint Reading 3

Question 1

When reading an isometric drawing, which of the following is TRUE?

Accepted Answer

Only lines parallel to the three isometric axes are true length

Answer

In isometric drawings, only lines parallel to the three principal isometric axes (120° apart) are drawn to true length.

Question 2

On an electrical schematic, a zigzag symbol represents:

Accepted Answer

A resistor

Answer

The zigzag or sawtooth line symbol on an electrical schematic represents a resistor.

Question 3

What information is typically found in the title block of a technical drawing?

Accepted Answer

Drawing number, title, scale, and drafter's name

Answer

The title block contains essential identification data including drawing number, part name, scale, tolerances, and the drafter's name.

Question 4

A 'cutting plane line' on a blueprint is used to:

Accepted Answer

Indicate the location and direction of a section view

Answer

A cutting plane line shows where an imaginary cut is made through an object to produce a section view.

Question 5

In GD&T, the datum reference frame establishes:

Accepted Answer

The three mutually perpendicular planes from which measurements are taken

Answer

The datum reference frame consists of three mutually perpendicular planes (primary, secondary, tertiary) that provide the origin for measurements.

(ITMC) Industrial Technology Maintenance Certification Practice Test