AWS AWS Joint Design & Preparation

Question 1

What is the 'root opening' (root gap) in a welded joint?

Accepted Answer

The separation between the members to be joined at the root of the joint

Answer

The angle between the two groove faces

Answer

The depth of the groove preparation

Answer

The thickness of the backing bar

Question 2

Which joint type is formed when two members overlap each other in parallel planes?

Accepted Answer

Lap joint

Answer

Butt joint

Answer

T-joint

Answer

Corner joint

Question 3

What is the 'groove angle' in a welded joint?

Accepted Answer

The total angle of the groove between the two workpieces

Answer

The angle of electrode inclination during welding

Answer

The angle of the root face

Answer

The bevel angle of a single piece only

Question 4

A 'root face' (land) in a groove weld joint refers to:

Accepted Answer

The flat portion at the root of a groove before welding

Answer

The face of the completed weld bead

Answer

The back side of the joint after back gouging

Answer

The portion of the joint filled with backing

Question 5

Which groove weld preparation is most economical for joining thin plate (under 3/16 in.) in a butt joint?

Accepted Answer

Square groove (no bevel)

Answer

Double-V groove

Answer

Single-V groove

Answer

U-groove

Question 6

The primary advantage of a double-V groove over a single-V groove for thick plate is:

Accepted Answer

It reduces the total weld volume and distortion by welding from both sides

Answer

It requires no back gouging

Answer

It is faster to prepare

Answer

It allows welding in only one pass