API API-577 Practice Exams
Last updated on Oct 22,2026- Exam Code: API-577
- Exam Name: Welding Inspection and Metallurgy Exam
- Certification Provider: API
- Latest update: Oct 22,2026
Which of the following is a commonly accepted advantage of flux core arc welding (FCAW)?
- A . Equipment is simple, inexpensive, and portable.
- B . The slag supports and shapes the weld bead.
- C . There is a reduced requirement for ventilation.
- D . There is minimal postweld cleanup.
Heating a round bar to an elevated temperature and then quenching one end is a test method to determine:
- A . Hardenability.
- B . Temper embrittlement.
- C . Heat treatability.
- D . Thermal conductivity.
P-numbers are based on which of the following?
- A . Comparable base metal characteristics
- B . Weldability characteristics of base metal
- C . Electrode characteristics
- D . Chemical composition of the base metal
At least how far on each side of the weld should preheat be maintained?
- A . 2 in. (5.1 cm)
- B . 3 in. (7.6 cm)
- C . 4 in. (10.2 cm)
- D . 6 in. (15.2 cm)
A welding engineer or inspector should be notified when a weld has failed a weld quality test more than how many times in order to help determine the cause of the test failure?
- A . ONCE
- B . TWICE
- C . THREE TIMES
- D . FOUR TIMES
A limitation of a stud arc welding (SW) process is:
- A . Welding rates are significantly lower than those obtained with SMAW.
- B . Process is primarily suitable for only carbon steel and low alloy steels.
- C . Process is limited to a flat position.
- D . Weld is not visible during the welding process.
Which of the following is an important aspect of a qualified WPS?
- A . Welder qualification
- B . Maintaining project schedule
- C . Welding program effectiveness
- D . Fabrication quality control
Refer to the following diagram:
Item#1 represents:
- A . root opening.
- B . root weld size.
- C . groove weld size.
- D . root face.
Filler metals are grouped according to their A-numbers to:
- A . Minimize the number of performance qualifications.
- B . Minimize the number of welding procedure qualifications.
- C . Define the welding characteristics.
- D . Designate similar chemical compositions.
Which welding process has been associated most with lack of fusion with shop-fabricated piping?
- A . GMAW-S
- B . GMAW-SF
- C . FCAW
- D . FCAW-SW