Engine_2014 : General Subjects - 1554/3524
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| Which of the following conditions is true concerning a radiograph taken on a large welded piping repair? |
| A) A discontinuity in the form of a crack would appear as a thin light line against the dark background of the film. |
| B) Porosity, a discontinuity caused by entrapped gas, would occur as various sized round dark spots. |
| C) As long as the plane of a crack is not in direct alignment with the direction of radiation, detection is certain. |
| D) All of the above. |
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