Visual Inspection Test Questions and Answers 100% Pass

Visual Inspection Test Questions and Answers 100% Pass Level 1 tech. should be qualified to perform? Specific calibrations, specific NDT, specific evaluations for accept- reject determinations per written instructions, and record the results. Level 3 has sufficient technical background in? Materials and fabrication and product technology to establish techniques and to assist in acceptance-rejection criteria where no written criteria is available. An inspection method using vision is called ? Visual testing What year was Visual testing recognized by ASNT? 1993 V. T. is used to? Determine : Quantity, size shape, surface finish, reflectivity, color fit, functionality, presence of surface discontinuities. Minimum illumination required for a fine detail visual test? 50 foot candles Minimum illumination for a general visual test? 15 foot candles 3. Examinations required for Level 1 in visual testing are? General :written Specific: written Practical: Hands on Vision: Near and color vision. Illumination for Critical Visual test? 100- 300 Foot Candles Define Boroscope? An industrial endoscope, periscope, or telescope prisms- lens fiber optics to transmit images from inaccessible internal areas for visual testing. Technology of light transmission thru crystalline fibers such as glass or quartz describes? FIBER OPTICS Translucent object that refracts light passing thru it in order to focus the light on a target describes? LENS A unit measure of illumination = to 1 lumen distributed over a square foot or to a surface illumination at a distance of 1 foot from a point of a candela is ? FOOTCANDLE Viewing an object not accessible to direct line of site with your eye and visible thru the use of optical and electronic devices is? Remote Visual Inspection. Boroscope. ex. Retina? In the eye tissue, it senses light. Ability to distinguish fine details visually is ? Visual Acuity Visual test done at 12 inches with a flashlight is called? JAEGER test. Major elements of the human eye are? Lens- retina- Optic-nerves and Brain. <LORB> What does lens of an eye do? Focus light on the retina. What colors are most visible by human eyes? Green and Yellow What color chart is often used for color vision? Ishihara chart What is the illumination of part with intensity of 50 fc at 12 feet? E = Intensity/Distance^2. so 50/ 12^2 = .347 what illumination on the surface if light intensity id 500 ftc at a distance of 4 feet? 500/4^2 = 31.25 What are some material conditions that can effect visual testing? Cleanliness brightness shape or size surface conditions- temperature texture- reflectivity What are some physiological factors that can effect vision? Health, fatigue and experience.