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ASNT Level II Study Guide questions and answers.
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ASNT Level II Study Guide questions and answers.
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ASNT Level II Study GuideA lumen is defined as - correct answer-equal to 1 fc falling on 1 ft2 of area
A photometer used by inspectors - correct answer-converts radiant energy of light into
measurable electrical signal
Battery drain, coated chips, and high light intensities are all considerations when using -
correct answer-LED sources
Being aware of hazards or risk related to a forthcoming inspection should be part of
__________ planning - correct answer-safety
Decreasing the angle between the light source and the line of sight is helpful when
examining _______ surfaces - correct answer-rough
During direct visual inspection, viewing distance shall not be any more than - correct
answer-24 in or 610 mm
Environmental factors that affect visual inspection includes - correct answer-atmosphere and
cleanliness
Eye muscle fatigue is driven by - correct answer-awkward body positions and poor lighting
How can glare be reduced during inspection of a part - correct answer-Dimming the light
source
If the focal point of the light entering the eye falls in front of the retina, the result is - correct
answer-myopia (neat-sightedness)
In a normal, healthy eye, the incoming light is focused on the - correct answer-retina
Luminous intensity - correct answer-is inversely proportional to the square of the distance
from the source
Mill scale, weld slag, and surface coatings can potentially - correct answer-mask
discontinuities
Operator performance, when visual testing, is most affected by - correct
answer-environmental conditions
The component of the eye that responds to light intensity and gives the eye its color is the -
correct answer-iris
To improve the detection of visual discontinuities on colored objects - correct answer-select
the optimal color of lighting to enhance desired characteristics
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