ASNT VT LEVEL II COMPREHENSIVE STUDY GUIDE 2026 COMPLETE SOLUTIONS VERIFIED

ASNT VT LEVEL II COMPREHENSIVE STUDY
GUIDE 2026 COMPLETE SOLUTIONS VERIFIED

◉ Spectroradiometer. Answer: Uses a monochromator, measures
spectral energy distribution of a radiant energy source


◉ Spectrophotometer. Answer: Uses a monochromator, measures
luminance of an object where light passes through or is reflected
from the surface.


◉ Purpose of Lighting. Answer: Provide adequate contrast so that
the detection of relevant objects or discontinuities for best
inspection.


◉ Contrast Detection. Answer: Most basic visual task, property of
difference between an object and its background of luminance or
color.


◉ Luminance Contrast. Answer: Difference in reflected light
between discontinuity and background.


◉ Chromatic Contrast. Answer: difference in hue and saturation
between an object and its background

, ◉ Quality of lighting. Answer: distribution of light sources in the
area


◉ Harsh Shadows. Answer: generally cause eye strain but some
shadow effect can accentuate contrast and aid in detection of depth
and form


◉ Shadows. Answer: controlled by horizontal illumination produced
by a light source or reflection from luminant walls.


◉ Direct Area/Room Lighting. Answer: 90%-100% output directed
downward. High illuminance in vertical direction.


◉ Semi-Direct Area/Room Lighting. Answer: 60%-90% output
directed downward. Eliminates ceiling shadows, avoid using bright
ceilings.


◉ General Diffuse Area/Room Lighting. Answer: Approximately
equal amounts of light directed both vertical directions, minimal
glare.


◉ Task Lighting. Answer: designed to illuminate work areas where
strong, bright light simplifies detail work