Certified Welder Blueprint Reading and Symbols Questions and Answers

Question 1

On a standard welding blueprint, what does a symbol placed below the reference line signify?

Accepted Answer

The weld should be made on the 'arrow side' of the joint.

Answer

The weld should be made on the 'other side' of the joint.

Answer

The weld requires a specific finishing process, such as grinding.

Answer

The weld is to be performed in the field, not in the shop.

Question 2

A welder is reviewing a blueprint and sees a circle at the junction of the arrow and the reference line on a welding symbol. What does this circle indicate?

Accepted Answer

The weld is to be made all around the joint.

Answer

A plug or slot weld is required.

Answer

The weld must be made in the shop.

Answer

The weld requires 100% radiographic inspection.

Question 3

Which of the following lines on a blueprint is used to show the visible outlines or edges of an object?

Accepted Answer

Object line

Answer

Hidden line

Answer

Center line

Answer

Phantom line

Question 4

While interpreting a welding symbol, a fabricator notes a flag located at the junction of the arrow and reference line. What is the significance of this flag?

Accepted Answer

It indicates the weld is to be made on-site (in the field) rather than in the fabrication shop.

Answer

It indicates a special inspection is required after welding.

Answer

It specifies the welding process to be used, such as SMAW or GMAW.

Answer

It denotes that the weld is critical and must be performed by a senior welder.

Question 5

A blueprint calls for a V-groove weld. Information such as the required groove angle and root opening would be found:

Accepted Answer

As part of the weld symbol on the reference line.

Answer

In the title block of the drawing.

Answer

Only in the general notes section.

Answer

On a separate bill of materials.

Question 6

A welding symbol includes the letters 'G' and 'M' above the contour symbol. What do these finishing symbols indicate?

Accepted Answer

The weld must be ground and then machined.

Answer

GMAW process with metal-cored wire.

Answer

The weld should be gouged and then magnaflux tested.

Answer

General purpose weld, to be measured.