Changed API-577 Exam Questions

Welding Inspection and Metallurgy Exam Questions and Answers

Question 9

For GMAW welding, the last number of the electrode identifies the:

Chemical composition.

Strength of the electrode.

Coating characteristics.

Operating characteristics.

Question 10

General awareness of metallurgy is important to the welding inspector because:

Welding processes can affect both mechanical and corrosion properties of a weldment.

The crystalline structure of base metals affects the resulting structure of the weld.

Physical properties of the final weldment can be significantly affected by preheat and postweld heat treatment (PWHT).

A thorough knowledge of weld metal structures is necessary to understand weldability.

Question 11

The WPS gives the welder specific guidelines to:

Set the machine amperage, voltage, and travel speed.

Confirm the project heat input is followed during welding.

Successfully complete production welds.

Make imperfection/defect-free welds.

Question 12

Which of the following can result from residual magnetism left in a partially completed weld?

Excessive distortion

Tendency of weld pool to be sluggish

Deflection of the weld arc

Solidification cracking