API API-577 Welding Inspection and Metallurgy Exam Online Training
API API-577 Online Training
The questions for API-577 were last updated at Nov 01,2025.
- Exam Code: API-577
- Exam Name: Welding Inspection and Metallurgy Exam
- Certification Provider: API
- Latest update: Nov 01,2025
Rules for qualifying welding operators using radiography on a production weld require what minimum weld length to be examined?
- A . 6 in. (150 mm)
- B . 12 in. (300 mm)
- C . 24 in. (600 mm)
- D . 36 in. (900 mm)
The simplest weldability tests are those that evaluate:
- A . Porosity and slag inclusions of the weld.
- B . Cracking and corrosion resistance of the weld.
- C . Strength and ductility of the weld.
- D . Ductility and hardness of the weld.
If a test specimen from a welded coupon should fail during PQR mechanical tests:
- A . Three out of four of the required test specimens must pass.
- B . The test coupon fails and a new coupon is required.
- C . Two additional test specimens from the coupon must be tested and pass.
- D . The WPS fails.
For SMAW welding, the last number of the electrode identification identifies:
- A . Chemical composition.
- B . Electrode operating characteristics.
- C . Welding position.
- D . Coating operating characteristics.
A-number groupings are based upon the:
- A . Chemical composition of the deposited weld metal.
- B . Comparable base metal ultimate strength values.
- C . Weldability characteristics of the metal.
- D . Type and strength of base metal.
Which of the following is a hazard associated with in-service welding on a carbon steel pipe containing chlorine?
- A . Explosion or unstable reaction with the addition of localized heat.
- B . Exothermic decomposition or explosion.
- C . Carbon steel will burn in the presence of chlorine and high heat.
- D . Hydrogen released during welding process can initiate hydrogen-assisted cracking.
What increases when a welder increases the amperage?
- A . Voltage
- B . Arc length
- C . Heat
- D . Travel speed
What term is used to describe the mechanical working of metals using impact blows?
- A . Hammering
- B . Mechanical stress relieving
- C . Needle gunning
- D . Peening
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 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.
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