API-577 시험 - API실제시험문제와 답 - 110문항

Question No : 1

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 PQ
C.All PQRs must be qualified with impact testing.
D.One PQR may support several WPSs.

정답:

Question No : 2

A limitation of a stud arc welding (SW) process is:

A.Welding rates are significantly lower than those obtained with SMA
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.

정답:

Question No : 3

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

정답:

Question No : 4

What increases when a welder increases the amperage?

A.Voltage
B.Arc length
C.Heat
D.Travel speed

정답:

Question No : 5

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.

정답:

Question No : 6

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.

정답:

Question No : 7

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.

정답:

Question No : 8

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.

정답:

Question No : 9

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.

정답:

Question No : 10

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)

정답:

Question No : 11

What is the purpose of a PQR?

A.To provide direction to the welder making production welds.
B.To establish the properties of the weldment.
C.To document that a welder has correctly followed a WP
D.To establish a welder's capability to make a quality weld.

정답:

Question No : 12

A crack with its major axis oriented approximately perpendicular to the weld axis is called a:

A.Lamellar crack.
B.Non-directional crack.
C.Transverse crack.
D.Perpendicular crack.

정답:

Question No : 13

According to the PQR 8025, does the thickness range qualified concur with the thickness range as stated on the WPS 802?

A.Yes, but only for thicknesses greater than .280"
B.No, the material thickness on the PQR should be .375"
C.Yes, the PQR qualifies the ranges as stated on the WPS
D.No, the PQR thickness should have been .560"

정답:

Question No : 14

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

정답:

Question No : 15

Which of the following is a practical solution to eliminate or reduce porosity when welding carbon steel?

A.Reduce travel speed
B.Proper shielding
C.Lower heat input
D.Arc length control

정답:

API API-577 시험