ASNT Level II Study Guide
A 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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Hkane. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.