2025年最新のAPI API-577試験問題には112問があります [Q62-Q80]

2025年最新のAPI API-577試験問題には112問があります

無料で使えるAPI-577別格な問題集をダウンロード2025年07月25日に更新された112問があります

質問 # 62
Items to be included in the PQR for the SMAW process are:

A. Welding process used and P-numbers of coupon welded.
B. P-numbers of coupon welded and AWS classification numbers.
C. Electrode-flux class and electrical characteristics.
D. Welding process used and AWS classification numbers.

正解：A

質問 # 63
Steels usually require both preheat and PWHT if they have a carbon equivalent higher than:

A. 0.45
B. 0.35
C. 0.50
D. 0.55

正解：A

質問 # 64
What GMAW welding process uses carbon dioxide as the shielding gas, and is limited to the flat and horizontal position?

A. Spray transfer
B. Short circuiting transfer
C. Pulsed transfer
D. Globular transfer

正解：D

質問 # 65
To avoid burn through during in-service welding on thinner wall equipment, it is generally recommended to:

A. Use larger diameter electrodes.
B. Use high heat input.
C. Maximize weaving the bead.
D. Minimize weaving the bead.

正解：D

質問 # 66
What is the most capable NDE method for finding a discontinuity such as incomplete fusion in a joint?

A. RT
B. ET
C. UT
D. MT

正解：C

質問 # 67
Mechanical tests are required to qualify a welding procedure to document that the properties of the weldment meet which of the following?

A. The same criteria required for welder qualification.
B. The minimum established acceptance criteria.
C. The expected load for which the weld will be subject.
D. The requirements as established in ASME Section XI.

正解：B

質問 # 68
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.

正解：C

質問 # 69
What is a sensitized microstructure in austenitic stainless steels?

A. An area near the heat-affected zone affected by welding that may experience intergranular corrosion.
B. The microstructure of the weld that has been melted and will therefore have properties more like a casting than the base metal.
C. The high residual stress zone adjacent to the weld fusion line that will have higher hardness than the weld or base material.
D. An area next to the heat-affected zone that has suffered some softening and loss of strength.

正解：A

質問 # 70
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. FOUR TIMES
C. THREE TIMES
D. TWICE

正解：D

質問 # 71
At least how far on each side of the weld should preheat be maintained?

A. 3 in. (7.6 cm)
B. 2 in. (5.1 cm)
C. 6 in. (15.2 cm)
D. 4 in. (10.2 cm)

正解：C

質問 # 72
When welding using the GTAW process, which of the following best describes the appearance of a transverse crack on a radiograph?

A. Elongated lines of darker density, irregular in width, and slightly winding in the lengthwise direction.
B. A feathery line of longitudinal orientation located at the center of the weld image.
C. An irregular darker line near the center of the width of the weld image along the edge of the root pass image.
D. A feathery, twisted line of darker density running across the width of the weld.

正解：D

質問 # 73
ACFM is an NDE technique ideal for inspecting:

A. Butt welds (single and double bevel) and plug welds.
B. Lap joint welds and uphill welding.
C. Fillet welds, J-welds, and seal welds.
D. Nozzles, ring-grooves, and grind-out areas.

正解：D

質問 # 74
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?