最新なAPI API-577問題集（112題）、真実試験の問題を全部にカバー！

質問 1：
Where is the weld HAZ assumed to be for purposes of hardness testing?
A. Just adjacent to the toe of the weld
B. 1 inch on either side of the centerline of the weld
C. 0.25 inch on either side of the fusion zone
D. 0.25 inch away from the toe of the weld into the base metal
正解：A

質問 2：
A-number groupings are based upon the:
A. Chemical composition of the deposited weld metal.
B. Weldability characteristics of the metal.
C. Comparable base metal ultimate strength values.
D. Type and strength of base metal.
正解：A

質問 3：
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 32
D. HRC 25
正解：B

質問 4：
What is the "area of interest" on a weld radiograph?
A. The portion that is less than 3t from the center of the radiograph, where t is the thickness of the weld
B. The entire radiograph minus 2 in. (50.8 mm) from the edges
C. The specific portion of a radiograph that needs to be evaluated
D. Only the area of contrasting density
正解：C

質問 5：
What is the purpose of a PQR?
A. To establish the properties of the weldment.
B. To provide direction to the welder making production welds.
C. To establish a welder's capability to make a quality weld.
D. To document that a welder has correctly followed a WPS.
正解：A

質問 6：
What is a sensitized microstructure in austenitic stainless steels?
A. An area next to the heat-affected zone that has suffered some softening and loss of strength.
B. The high residual stress zone adjacent to the weld fusion line that will have higher hardness than the weld or base material.
C. An area near the heat-affected zone affected by welding that may experience intergranular corrosion.
D. The microstructure of the weld that has been melted and will therefore have properties more like a casting than the base metal.
正解：C

質問 7：
Crater cracks typically occur:
A. In weld metal at the point where the arc initiates.
B. In the HAZ at the point where the arc initiates.
C. In the HAZ at the point where the arc terminates.
D. In weld metal at the point where the arc terminates.
正解：D

質問 8：
A root opening of a groove weld is:
A. A separation at the joint root between the work pieces.
B. That portion of the groove face adjacent to the joint root.
C. The surface of a joint member included in the groove.
D. The beveled surface of the joint members.
正解：A

質問 9：
Hardenability of a steel can be an indirect indicator of:
A. Cooling rate
B. Weldability
C. Toughness
D. Strength
正解：B