api API-577 Exam Questions
Questions for the API-577 were updated on : Nov 21 ,2025
Page 1 out of 8. Viewing questions 1-15 out of 110
Question 1
The weld symbol represents which type of weld groove?
- A. Parallel
- B. Scarf
- C. Flare
- D. Bevel
Answer:
D
Question 2
Refer to the following diagram:
Item#1 represents:
- A. root opening.
- B. root weld size.
- C. groove weld size.
- D. root face.
Answer:
A
Question 3
Refer to the following diagram:
Item#4 represents:
- A. bevel face.
- B. bevel angle.
- C. groove angle.
- D. groove face.
Answer:
B
Question 4
Where is the weld HAZ assumed to be for purposes of hardness testing?
- A. 0.25 inch on either side of the fusion zone
- B. 0.25 inch away from the toe of the weld into the base metal
- C. 1 inch on either side of the centerline of the weld
- D. Just adjacent to the toe of the weld
Answer:
D
Question 5
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)
Answer:
D
Question 6
One limitation of a shielded metal arc welding (SMAW) process is that:
- A. Deposition rates are lower than GMAW.
- B. The process cannot be used in areas of limited access.
- C. It has low tolerance for contaminants.
- D. The process is sensitive to wind and draft.
Answer:
A
Question 7
ACFM is an NDE technique ideal for inspecting:
- A. Nozzles, ring-grooves, and grind-out areas.
- B. Lap joint welds and uphill welding.
- C. Butt welds (single and double bevel) and plug welds.
- D. Fillet welds, J-welds, and seal welds.
Answer:
A
Question 8
What is the most capable NDE method for finding a discontinuity such as incomplete fusion in a
joint?
- A. MT
- B. UT
- C. ET
- D. RT
Answer:
B
Question 9
What is the purpose of the IQI?
- A. Determining that the required sensitivity of the radiograph is achieved
- B. Marking the radiographs with a definite identifying characteristic
- C. Ascertaining how much radiation the source has penetrated the material
- D. Establishing the depth that the radiation source penetrates
Answer:
A
Question 10
The distance the weld metal extends from the weld face into a joint, exclusive of weld reinforcement
is called:
- A. Groove angle
- B. Joint penetration
- C. The weld body
- D. Complete penetration
Answer:
B
Question 11
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.
Answer:
D
Question 12
To reduce the possibility of cracking, which of the following maximum hardness levels is required for
weldments in wet H2S service?
- A. HRC 20
- B. HRC 22
- C. HRC 25
- D. HRC 32
Answer:
B
Question 13
When welding using the GTAW process, which of the following best describes the appearance of a
transverse crack on a radiograph?
- A. A feathery line of longitudinal orientation located at the center of the weld image.
- B. Elongated lines of darker density, irregular in width, and slightly winding in the lengthwise direction.
- C. A feathery, twisted line of darker density running across the width of the weld.
- D. An irregular darker line near the center of the width of the weld image along the edge of the root pass image.
Answer:
C
Question 14
Items to be included in the WPS for GMAW process are:
- A. Joint design and test coupon thickness.
- B. Base metal P-number and deposited metal thickness.
- C. Type of welding process and test coupon thickness.
- D. Electrode-flux class and electrical characteristics.
Answer:
C
Question 15
Which of the following is used to determine the soundness and ductility of a groove weld?
- A. Ductility test
- B. Guided bend test
- C. Notch toughness test
- D. Tension test
Answer:
B