ASNT Level III Visual Testing Questions with correct Answers 2024

ASNT Level III Visual Testing EXAM


1. The visible light range is: 380-770 nm i| i| i| i| i| i|




2. If100lumensoffluxismeasuredat10inchesfromalightsource,howmany would b
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measured 30 inches from the light source?: 11 lumens
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3. Acetate film replicates surface features by:: capillary action i| i| i| i| i| i| i|




4. A guided bend test of a weld would be rejectable for:Lack of fusion on the convex
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side of the specimen
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5. CCDs and orthicons are types of:: image sensor i| i| i| i| i| i| i|




6. Inacamerawhattwocomponentsperformthesamefunctionsasthecornea and
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retina in the eye: lens and photocathode
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7. In an equal leg fillet weld the actual throat is the::distance from the root to face
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8. Reduced contrast from light reflected between the front of the tube and the i| i| i| i| i| i| i| i| i| i| i| i|




fluorescent crystals on the screen is termed:: screen reflections
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9. In an unequal leg fillet weld the size is the::the product of the sides of the largest
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right triangle that can be inscribed in the fillet
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10. Electron microscope resolution is::better than that obtained from a light i| i| i| i| i| i| i| i| i| i|




microscope
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11. Hydrogen fluoride,fluorosilic acid,hydrogen peroxide,and bromine are i| i| i| i| i| i| i| i|




hazardous materials used for:: etching
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12. Cleavagefractureofacarbonsteelwouldlikelyoccurat::thethinnestcross sectio i| i| i| i| i| i| i| i| i| i| i| i| i|




13. Acreepfailurewouldbestbevisuallyexaminedby::=acetatefilmreplication
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14. Beach marks and striations are features of::fatigue failures i| i| i| i| i| i| i| i|




15. to increase contrast of striations on a replica one would use::shadowing and/o
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vapor deposition
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16. which lens controls magnification of a borescope::ocular, middle, objective
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17. Whatistheeffectofincreasingmagnificationonaborescope::fieldofview is
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decreased and/or depth of field is decreased
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18. What aperture should be used to maximize depth of field:: the smallest
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19. The characteristic of a 7X pocket magnifier are::short focal length (25mm), 20m
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field of view, and low resolution (10um)
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, 20. The leg size of an equal leg fillet weld is equal to 0.7 times the:: nothing
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21. Charge coupled devices convert light into::electrons
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22. To increase the resolution of a television system::use a camera with more lines
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23. General material loss in a pump would be caused by::corrosion
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24. Image quality obtained from a video tape can be increased by::digital
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enhancement
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25. Contact rings on a borescope are used to:: allow borescope rotation
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