When radiographic examination is used for welder qualification utilizing the GMAW-S process, the minimum length of the test coupon to be examined is:

ARadiographic examination is not allowed.

BThe entire weld circumference for pipe coupon.

C36 in. for welder operator qualification.

D6 in. for welder qualification.

Answer : D

The size and width of the weld HAZ is dependent upon:

AThe properties of the base metal.

BThe thickness of the metal.

CThe residual hardness of the weld joint.

DThe heat input during welding.

Answer : D

The change in shape (deformation) that a test specimen experiences when it is stressed or loaded is called:

AYield.

BStrain.

CStress.

DPlasticity.

Answer : B

Which term is used to describe a groove melted into the base metal adjacent to the weld toe or weld root and left unfilled by weld metal?

ALongitudinal groove

BIncomplete fusion

CUnder fill

DUndercut

Answer : D

In magnetic particle examination, the yoke is placed parallel to the weld to detect cracks:

AIn the undercutting.

BParallel to the weld.

CTransverse to the weld.

DIn the HAZ.

Answer : C

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