ITMC Blueprint Reading 5

Question 1

On a lubrication diagram, a filled black triangle symbol typically represents:

Accepted Answer

A grease fitting or lubrication point

Answer

A filled triangle symbol on lubrication diagrams marks a grease fitting or oiling point where lubricant should be applied.

Question 2

The term 'bilateral tolerance' means that the tolerance is applied:

Accepted Answer

Equally in both the plus and minus directions from the nominal

Answer

Bilateral tolerance distributes the allowable variation equally above and below the nominal dimension, such as ±0.005.

Question 3

On a ladder logic diagram used for PLC programming, a normally closed contact symbol is represented by:

Accepted Answer

Two vertical lines with a diagonal slash between them

Answer

A normally closed (NC) contact in ladder logic is shown as two vertical lines with a diagonal slash, indicating it passes current when its coil is de-energized.

Question 4

A break line (wavy or zigzag) on a drawing indicates:

Accepted Answer

That a portion of the object has been omitted to save space

Answer

Break lines indicate that part of the object is not shown, allowing long or repetitive features to be drawn at a larger scale without showing the entire length.

Question 5

In a mechanical assembly drawing, a balloon callout with a number inside refers to:

Accepted Answer

The item number corresponding to the parts list or bill of materials

Answer

Balloon callouts on assembly drawings identify parts by their item number, which links to the bill of materials for part numbers, descriptions, and quantities.

(ITMC) Industrial Technology Maintenance Certification Practice Test

(ITMC) Industrial Technology Maintenance Certification Practice Test

ITMC Blueprint Reading 5