CWI Ultimate Review 2

Question 1

According to AWS D1.1, what is the minimum preheat temperature required for ASTM A514 steel (thickness > 2.5 in) when welding with SMAW?

Accepted Answer

225°F (107°C)

Answer

50°F (10°C)

Answer

150°F (65°C)

Answer

200°F (93°C)

Question 2

Which discontinuity is characterized by a groove melted into the base metal adjacent to the weld toe and left unfilled?

Accepted Answer

Undercut

Answer

Overlap

Answer

Underfill

Answer

Cold lap

Question 3

A welder qualification test plate is welded in the 2G position. Which position(s) does this qualify the welder to weld in production?

Accepted Answer

Flat and horizontal

Answer

Flat only

Answer

Flat, horizontal, and vertical

Answer

All positions

Question 4

What does the term 'effective throat' refer to in a fillet weld?

Accepted Answer

The shortest distance from the root to the face of a fillet weld, excluding convexity

Answer

The leg length of the fillet weld

Answer

The distance from the weld root to the weld face

Answer

The total depth of weld fusion

Question 5

When inspecting a radiograph, a rounded indication with a length-to-width ratio of 3:1 or less is classified as:

Accepted Answer

A porosity indication

Answer

An elongated slag inclusion

Answer

A crack indication

Answer

A tungsten inclusion

Question 6

In magnetic particle testing (MT), which type of magnetization is most effective for detecting longitudinal (axial) discontinuities in a pipe?

Accepted Answer

Circular magnetization

Answer

Longitudinal magnetization

Answer

Prod technique

Answer

Yoke technique

Question 7

What is the primary purpose of a macro-etch test on a weld cross-section?

Accepted Answer

To reveal weld profile, fusion, and internal discontinuities

Answer

To detect surface porosity

Answer

To measure weld hardness

Answer

To determine chemical composition