API API-577 Practice Exams
Last updated on Oct 21,2026- Exam Code: API-577
- Exam Name: Welding Inspection and Metallurgy Exam
- Certification Provider: API
- Latest update: Oct 21,2026
Which of the following transfer methods associated with GMAW is characterized by a highly directed stream of discrete drops that are accelerated by arc forces, and negligible spatter?
- A . Pulsed droplet transfer
- B . Short circuiting transfer
- C . Globular transfer
- D . Spray transfer
Which of the following statements is true?
- A . PQRs qualified on P8 materials also qualify for P1 materials.
- B . Welding procedures must be supported by more than one PQR.
- C . All PQRs must be qualified with impact testing.
- D . One PQR may support several WPSs.
What is a discontinuity?
- A . An interruption in the normal physical structure of a material.
- B . An imperfection which is detectable with NDE.
- C . The response or evidence from the application of NDE.
- D . A departure of a quality characteristic from its intended condition.
Hardenability of a steel can be an indirect indicator of:
- A . Weldability
- B . Toughness
- C . Strength
- D . Cooling rate
If a nonessential variable is changed on a WPS, which of the following actions must occur?
- A . The welding inspector can simply make the change on the WPS and initial as proof of acceptance.
- B . It may be changed on the WPS without requalifying the welding procedure.
- C . The welding procedure will need to be requalified by performing mechanical testing.
- D . Impact testing must be performed at the discretion of the welding engineer.
Which of the following is a commonly accepted limitation of flux core arc welding (FCAW)?
- A . It is more sensitive to drafts and wind than GMAW.
- B . It has lower deposition rates than SMAW.
- C . Shielding must always be provided by an externally supplied gas.
- D . Large volumes of welding fumes are generated.
For GMAW welding, the last number of the electrode identifies the:
- A . Chemical composition.
- B . Strength of the electrode.
- C . Coating characteristics.
- D . Operating characteristics.
To reduce exposure to moisture of low-hydrogen electrodes after they have been removed from the manufacturer’s packaging, they should be stored:
- A . Under low humidity conditions.
- B . In warm holding ovens.
- C . In sealed plastic containers.
- D . In tightly sealed ovens.
In magnetic particle examination, the yoke is placed parallel to the weld to detect cracks:
- A . In the undercutting.
- B . Parallel to the weld.
- C . Transverse to the weld.
- D . In the HAZ.
Which source of radiation is normally used for performing field radiography on steel with a 4-in. thickness?
- A . Selenium 75
- B . Cobalt 60
- C . Iridium 192
- D . X-ray machine