Penetrant LVL 1
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| 1. Which condition affects the rate and extent a liquid penetrant will enter cracks, fissures and other small openings? a. specimen hardness b. specimen surface condition c. penetrant color d. conductivity of tested specimen. | show 🗑
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| show | a. postemulsifiable penetrant
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| 3. A method for removing excess nonwater wash penetrant is: a. dipping the test specimen in a cleaner b. soaking the test specimen in hot detergent water c. blowing the excess penetrant off part d. wipe part with solvent-dampened cloth | show 🗑
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| 4. All of the following parts can be tested by the liquid penetrant method except: a. an iron casting b. an aluminum forging c. a part made from a porous plastic material d. a part made from a nonporous material | show 🗑
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| show | a. a surface crack
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| 6. Which of the following is generally the more acceptable method for cleaning parts prior to penetrant testing? a. sand blasting b. wire brushing c. grinding d. vapor degreasing | show 🗑
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| 7. 7. All of the following methods are commonly used to clean parts prior to penetrant testing except: a. vapor degreasing b. liquid solvent c. power wire brushing d. alkaline cleaner | show 🗑
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| show | b. vapor degreasing
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| show | d. water
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| 10. Ultraviolet light, with a proper functioning filter in place, used for fluorescent penetrant inspection can cause permanent damage to: a. human tissues b. human eyes c. human blood cells d. none of the above | show 🗑
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| show | b. indications glow when illuminated with an ultraviolet light
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| 12. Subsurface discontinuities can be best detected by: a. the post emulsification penetrant method b. the visible dye penetrant method c. the fluorescent, water washable penetrant method d. none of the above | show 🗑
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| 13. Water washable penetrants may be applied by: a. brushing b. spraying c. dipping d. all of the above | show 🗑
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| 14. The first step in conducting a liquid penetrant test on a surface that has been painted is to: a. carefully apply the penetrant over the surface b. completely remove the paint c. thoroughly wash the surface with a detergent d. wire brush the sur | show 🗑
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| show | c. after the dwell time has elapsed
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| 16. When conducting a water washable liquid penetrant test, the wet developer is applied: a. immediately after the penetrant has been applied b. immediately before the penetrant is applied c. after removal of the penetrant d. after removal of th | show 🗑
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| show | a. blotting
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| 18. Using an ultraviolet light lamp with a cracked filter or without the filter in place can cause damage to human eyes because the lamp emits: a. black light b. ultraviolet light c. infrared light d. none of the above | show 🗑
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| 19. The term used to define the period of time in which the test pan is covered with penetrant is: a. waiting time b. soak time (drain time) c. penetration time (dwell time) d. bleed in time | show 🗑
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| 20. Usually, the most desirable method of removing excess water washable penetrant after the dwell time is by using: a. a low pressure coarse water spray b. water and brush c. a solid stream of water d. water and clean rags | show 🗑
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| show | d. spraying
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| 22. Which is not characteristic of liquid penetrant testing? a. Can accurately measure the crack depth b. Can be used on-site on large parts c. Can find shallow surface indications d. Can adjust sensitivity with different PT materials. | show 🗑
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| show | c. shallow and broad discontinuities
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| show | d. scan the surface with an ultraviolet light
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| show | d. all of the above.
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| 26. Liquid penetrant testing is capable of detecting: a. subsurface intergranular stress corrosion cracking discontinuities. b. Discontinuities open to the surface c. Subsurface discontinuities d. Lack of fusion(subsurface). | show 🗑
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| 27. Ultraviolet light equipment is required when penetrant testing by: a. the fluorescent penetrant method b. the visible dye penetrant method c. the nonfluorescent penetrant method d. all of the above. | show 🗑
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| 28. The tendency of certain liquids to penetrate into small openings such as cracks or fissures is: a. Saturation b. Capillary Action c. blotting d. wetting agent | show 🗑
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| show | a. after penetrant dwell time
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| 30. When using a postemulsifiable penetrant, the emulsifier time should be: a. as long as the penetrant dwell time b. half the penetrant dwell time c. the same as the developer time d. only as long as necessary to remove the interfering backgrou | show 🗑
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| 31. The generally accepted minimum time period for eyes becoming accustomed to the dark is: a. 1 to 5 min b. 5 to 10 min e. 10 to 15 min d. no waiting period is necessary | show 🗑
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| 32. When applying penetrant by dipping, heating the penetrant prior to dipping: a. will not increase test sensitivity b. will not increase penetrant capillary action c. will increase the penetrant stability d. is not generally recommended | show 🗑
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| show | c. an internal cavity
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| show | a. unglazed porous ceramic
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| 35. Liquid penetrant testing can be used to detect: a. discontinuities 1.6 mm (0.06 in.) below the surface b. internal discontinuities c. discontinuities open to the surface d. all discontinuities | show 🗑
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| 36. Commonly accepted methods for applying penetrant? a. dipping the part in penetrant (dipping) b. pouring the penetrant over the test specimen (flowing) c. spraying the penetrant on the test specimen (spraying) d. all of the above | show 🗑
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| 37. Which is not characteristic of a surface cleaning solvent: a. cleaner must be able to dissolve oils and greases b. cleaner must not be flammable c. cleaner must be free of excessive contaminants d. cleaner must leave a minimal surface residue. | show 🗑
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| show | a. disc may be peened over and closed
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| show | c. is drawn into discontinuities by capillary
action
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| show | c. fluorescent indications will be seen with UV lights
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| show | d. all
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| 42. Remove excess water washable penetrant from component by: a. using a wet rag b. using a water spray rinse c. washing the part directly under water running from a tap d. immersing the part in water | show 🗑
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| 43. The test specimen final inspection for discontinuities should occur: a. immediately after the developer applied b. any time after the developer applied c. after developer on specimen for dwell time. d. immediately after the rinse operation | show 🗑
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| show | a. VD penetrants do not require UV light
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| 45. The terms dry, aqueous wet and nonaqueous wet are used to describe three different types of: a. emulsifiers b. cleaners c. developers d. penetrants | show 🗑
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| 46. Which of the following is not a generally accepted method for applying penetrants? a. rubbing the penetrant over the surface b. brushing the penetrant on the part c. spraying the penetrant on the part d. dipping the part in the penetrant | show 🗑
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| 47. Which of the following is the most commonly used method for removing nonwater washable visible dye penetrant from the surface of a test specimen? a. dipping in a solvent b. spraying c. hand wiping d. blowing | show 🗑
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| 48. Which of the following is an acceptable method for applying wet developers? a. application with a soft brush b. application with a hand powder bulb c. rubbing with a saturated cloth d. spraying or dipping | show 🗑
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| show | d. wiping part with solvent dampened rag
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| 50. During a penetrant test, observe all health precautions except: a. keeping the work area clean b. washing any penetrant from skin with soap and water ASAP c. keeping penetrant off clothes d. using gasoline to remove excess penetrant from skin. | show 🗑
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| 51. Which of the following surface contaminants cannot be removed by cleaning parts in a vapor degreaser? a. grease b. rust c. heavy oil d. soluble oil | show 🗑
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| show | d. all of the above
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| show | c. emulsification time
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| 54. Result of excess emulsification time when using PE penetrants? a. many nonrelevant indications b. loss of shallow discontinuity indications c. remaining excess penetrant after wash operation d. hardened emulsifier prevents blotting developer | show 🗑
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| show | c. adding fluorescence to penetrants
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| 56. Primary limitation of liquid penetrant testing? a. PT cannot be used on ferromagnetic material b. PT cannot locate shallow surface discontinuities c. PT cannot be used on nonmetallic surfaces d. PT cannot locate subsurface discontinuities | show 🗑
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| show | b. development time
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| 58. PT is a NDT test that can be used for: a. locating and evaluating all types of discontinuities b. locating discontinuity length, width, and depth. c. determining the test specimen tensile strength d. locating discontinuities open to the surface | show 🗑
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| 59. When performing fluorescent PT, ultraviolet light equipment is required to: a. cause the penetrant to fluoresce b. aid the normal capillary action of a penetrant c. neutralize excess surface penetrant d. decrease the parts surface tension | show 🗑
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| 60. The method used to remove excess visible dye penetrant from a test specimen is primarily determined by: a. the surface roughness of the specimen b. the type of material being tested c. the length of penetration time d. all of the above | show 🗑
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| 61. Which of the following is a type of developer used in penetrant inspection? a. dry b. aqueous particulate c. nonaqueous particulate d. water soluble e. all of the above | show 🗑
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| show | a. viscous penetrant
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| 63. If a part to be penetrant tested is hot, the penetrant: a. may become viscous b. may reduce sensitivity to small defects c. may lose some of its color brilliance d. will show small discontinuities better | show 🗑
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| show | d. water washable
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| show | d. Penetrant residue can reduce indication brightness
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| show | a. line voltage fluctuations
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| 67. Which statement does not apply to PT developers a. developers are normally highly fluorescent b. developers provide contrasting background c. developers absorb penetrant in discontinuities after the rinse d. developers may be either wet or dry | show 🗑
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| show | c. excess dryer heating may degrade water washable penetrants
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| 69. When using a wet developer: a. a thick developer layer reveals fine cracks better. b. remove excess developer with compressed air c. a black developer shows better contrast than white. d. a thin developer layer reveals fine cracks better | show 🗑
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| 70. Which are false? a. Sandblast surface cleaning is not recommended b. Precleaning surface oil is not needed as penetrants are an oil c. Vapor degreasing removes surface oil d. UV lights need a voltage regulator to control fluctuations | show 🗑
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| show | b. visible dye penetrants are used
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| show | a. oil
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| show | c. to draw penetrant from discontinuities and to provide a contrasting background
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| 74. Incorrect crack panels (blocks) use? a. to find a standard reproducable crack size b. to find penetrant's relative sensitivities c. to gauge if penetrant is contaminated d. to find cleaning method to remove surface penetrant | show 🗑
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| 75. Generally accepted precaution when using water washable penetrants? a. be sure that part is washed during the rinse step b. be sure that dwell time is not exceeded c. avoid overrinsing the part d. avoid overapplication of emulsifier | show 🗑
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| show | b. avoid excessive solvent usage
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| 77. Insufficient rinsing of fluorescent penetrants will result in: a. subsequent corrosion of the surface b. difficulty in the application of developer c. excessive bleedout d. excessive background fluorescence | show 🗑
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| show | c. protective clothing and respirators must be worn
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| 79. Penetrant dwell time length? a. varies with penetrant type, component material, sensitivity desired, discontinuities sought b. penetrants penetrate in a matter of seconds, post clean should start ASAP after penetrant applied. c. 3 min d. 10 min | show 🗑
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| show | d. all of the above
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| 81. A water loss in wet developer mix or over concentration of developer powder can cause: a. a loss of fluorescence during the inspection b. non relevant indications c. cracking developer coating during the drying operation d. none of the above | show 🗑
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| show | b. it will cloud the viewer's vision temporarily.
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| 83. When using dry developer, the drying operation is performed: a. immediately after removal of excess penetrant b. before the inspection step c. thoroughly d. all of the above | show 🗑
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| show | a. contamination of the penetrant materials
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| show | c. redipping the part
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| 86. When drying parts during PT, the parts: a. are dried at room temperature b. are dried by a circulating hot-air dryer c. should be dried in oven at a 54 °C (130 °F) d. should be dried by cool forced air | show 🗑
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| 87. Water washable penetrant with water contamination will: a. reduce the penetrating quality of the penetrant b. adversely affect the wash ability of the penetrant c. both a and b are correct d. neither a nor b are correct | show 🗑
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| 88. Which penetrant method is used in portable field inspections? a. the water washable fluorescent penetrant method b. the postemulsification fluorescent penetrant method c. the visible dye penetrant method d. none of the above | show 🗑
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| show | d. in a darkened area under an ultraviolet light
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| 90. Which of the following penetrants can be used when inspection must take place under ordinary lighting conditions? a. visible dye penetrant b. water washable fluorescent penetrant c. postemulsification fluorescent penetrant d. any of the above | show 🗑
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| 91. All of the following materials can be effectively tested with liquid penetrant except: a. aluminum b. unglazed ceramics c. glass d. magnesium | show 🗑
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| show | d. PT method is not effective at all temperatures
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| show | b. evaporate very rapidly
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| show | c. must be fluorescent if used with fluorescent penetrants
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| show | d. do not effect the inspection
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| 96. Color contrast penetrants are commercially available in which of the following variations? a. normal solvent clean type b. water wash type c. postemulsification type d. all of the above | show 🗑
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| 97. Which is source of false test specimen indications? a. residue from previous liquid penetrant testing b. maehingin oil c. scale, rust and corrosion d. all of the above | show 🗑
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| show | c. essential as surface contaminants keep penetrant from discontinuities
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| show | c. rinsing under ultraviolet light
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| show | b. most visible dyes diminish or destroy fluorescence
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| show | d. all of above
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| show | b. high flash point
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| 103. A material that is applied over the surface penetrant film of a part, mixes with the penetrant, and enables the penetrant to be washed off the surface is called: a. an emulsifier b. a penetrant c. a developer d. an isomer | show 🗑
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| 104. The time allowed for the penetrant to enter discontinuities that may be present is the: a. emulsification time b. application time c. dwell time d. drain time | show 🗑
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| 105. Which of the following penetrant systems is generally considered to be the most sensitive? a. water washable — visible dye b. solvent removable — visible dye c. water washable — fluorescent dye d. postemulsification — fluorescent dye | show 🗑
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| show | a. dry — fluffy
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| show | a. emulsify penetrant and make it water washable.
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| 108. Developer assists in the detection of visible liquid penetrant indications by: a. providing a clean surface b. providing a contrasting background c. providing a dry surface d. emulsifying the penetrant | show 🗑
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| show | d. subsurface porosity
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| 110. What is the most universally used ultraviolet light? a. incandescent lamps b. metallic carbon arcs c. tubular BL fluorescent lamps d. enclosed mercury-vapor arc lamps | show 🗑
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| 111. Which of the following processes would be most sensitive to detecting very fine defects? a. oil-and-whiting process b. water washable process c. postemulsification process d. water emulsifiable visible dye penetrant process | show 🗑
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| 112. When using the PE process, which of the following methods cannot be used? a. dipping the part in the emulsifier b. spraying the part with emulsifier c. pouring emulsifier over the part d. brushing emulsifier on the part | show 🗑
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| 113. Which of the following would be the most desirable center wavelength for the output of the light source used in fluorescent processes? a. 320 nm b. 365 nm c. 520 nm d. 565 nm | show 🗑
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| show | c. a true indication
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| 115. Liquid penetrants become sluggish at temperatures: a. above 38 °C (100 °F) b. between 10° and 38 °C (50 and 100 °F) c. below 10 °C (50°F) d. below 21 °C (70 °F) | show 🗑
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| 116. Why won't flushing surface in WW penetrant, remove indications? a. developer draws out penetrant b. spray pushes penetrant without dissolving it c. water drops will not enter most defects d. remove penetrant with water dampened cloth | show 🗑
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