ITMC Blueprint Reading 4

Question 1

A weld symbol with a filled circle at the junction of the reference line and arrow indicates:

Accepted Answer

A field weld to be performed on-site

Answer

A filled (solid) dot at the tail-arrow junction of a weld symbol indicates a field weld, meaning it is to be made at the installation site rather than in the shop.

Question 2

On a blueprint, the symbol '⌀' preceding a dimension number indicates:

Accepted Answer

A diameter measurement

Answer

The ⌀ (phi) symbol indicates that the dimension is a diameter, typically for a cylindrical or circular feature.

Question 3

What is the function of a 'detail view' on an engineering drawing?

Accepted Answer

To show an enlarged view of a small or complex area for clarity

Answer

A detail view presents an enlarged version of a small or intricate area that cannot be clearly shown at the drawing's main scale.

Question 4

In a pneumatic circuit diagram, a rectangle with two triangles pointing inward from each side represents:

Accepted Answer

A double-acting cylinder

Answer

A double-acting cylinder in pneumatic diagrams is shown as a rectangle with two opposing inward-pointing triangles, representing pressure ports on both ends.

Question 5

The 'straightness' GD&T control differs from 'flatness' in that straightness:

Accepted Answer

Controls a line element or axis, while flatness controls a surface

Answer

Straightness controls individual line elements (on a surface) or the central axis of a cylindrical feature, while flatness controls an entire surface.

(ITMC) Industrial Technology Maintenance Certification Practice Test

(ITMC) Industrial Technology Maintenance Certification Practice Test

ITMC Blueprint Reading 4