CWI Fundamentals 4

Question 1

A Welding Procedure Specification (WPS) must be supported by:

Accepted Answer

A Procedure Qualification Record (PQR)

Answer

The PQR documents the actual test results from welding a test coupon to confirm the WPS parameters produce welds with acceptable mechanical properties.

Question 2

Which type of weld joint is formed when two members lie in the same plane and their edges are joined?

Accepted Answer

Butt joint

Answer

A butt joint connects two members that lie approximately in the same plane with their edges joined along the seam.

Question 3

When hydrogen-induced cracking (HIC) is a concern, which electrode storage practice is most important?

Accepted Answer

Keeping low-hydrogen electrodes in a heated oven before use

Answer

Low-hydrogen electrodes must be stored in a holding oven at the manufacturer-specified temperature (typically 250–300°F) to prevent moisture absorption that leads to HIC.

Question 4

What does the 'F number' classification of a filler metal indicate in ASME and AWS qualification codes?

Accepted Answer

A grouping of filler metals with similar usability characteristics for welder qualification

Answer

F numbers group filler metals by usability characteristics so that a welder qualified with one filler metal in the group is qualified for others in the same group.

Question 5

An inspector measures a fillet weld and finds its actual throat is larger than specified. This condition is known as:

Accepted Answer

Excessive convexity

Answer

Excessive convexity means the weld face profile projects too far outward, resulting in a larger-than-required actual throat and wasted weld metal.

CWI Practice Test

CWI Practice Test

CWI Fundamentals 4