PT Level III Questions.txt

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PT Level III Questions.txt
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  1. Chemical, water-base cleaners are often used for very dirty, greasy parts. If used:
    A. the surface must be subsequently cleaned with a solvent cleaner.
    B. Heat must be used to ensure the removal of any detergents from surface openings.
    C. The surfaces must be subsequently cleaned with a volatile solvent cleaner.
    D. The surface must be thoroughly rinsed free of any residue.
    D. The surface must be thoroughly rinsed free of any residue.
    (this multiple choice question has been scrambled)
  2. Generally, vapor degreasing is considered to be one of the best methods of preparing a part for ` liquid penetrant inspection because:
    a. it totally removes all surface contaminants.
    b. The solvent vapor removes all petroleum based materials
    c. The method is easily adapted to virtually any size of the part
    d. The solvent vapor removes all inorganic soils
    b. The solvent vapor removes all petroleum based materials
  3. When penetrant is applied to parts by dipping, the parts should be:
    a. left in the tank during the entire dwell time.
    b. Set aside until the dwell time is up
    c. Placed on a rack designed to return any excess drainage to the dipping station
    d. Placed in the alkaline solvent rinse tank immediately.
    c. Placed on a rack designed to return any excess drainage to the dipping station
  4. enetrant stations that have reservoir tanks with recovery systems incorporated:
    a. should have an agitation system because penetrants are homogeneous
    b. should have an agitation system to prevent the settling of possible contaminants
    c. do not need an agitation system as penetrants are pasteurized.
    a. should have an agitation system because penetrants are homogeneous
  5. When removing penetrant from the surface by spray water wash, penetrant in a crack would be harder to remove if it has:
    a. low viscosity
    b. high viscosity
    c. medium viscosity
    d. viscosity is not important
    b. high viscosity
  6. he most desirable objectives governing the cleaning operations when removing surface penetrant are to:
    a. remove little penetrant from defects and a minimum of residual penetrant from defects and a minimum of residual penetrant remaining on the surface
    b. remove little penetrant from a defect and no residual penetrant remaining on the surface.
    c. Remove no penetrant from defects and leave minimum of residual on the part surface.
    d. Remove no penetrant from defects and leave no penetrant on the part surface.
    d. Remove no penetrant from defects and leave no penetrant on the part surface.
  7. The best method of removing the excess water-washable penetrant is to:
    A. Boil in hot water or steam spray.
    B. Use a hose and nozzle with forceful droplets.
    C. Use water running directly from a tap.
    D. Immediately immerse the part in the water rinse tank.
    B. Use a hose and nozzle with forceful droplets
    (this multiple choice question has been scrambled)
  8. When removing excess post-emulsifiable penetrant in a production situation involving small irregularly-shaped parts, one may use a:
    A. Strong forceful spray
    B. Strong water blast
    C. Commercial solvent
    D. Hot water immersion.
    A. Strong forceful spray
    (this multiple choice question has been scrambled)
  9. The sensitivity of wet developers can be seriously impaired:
    A. when the developer temperature is greater than the ambient temperature.
    B. When the thickness of the coating becomes too heavy.
    C. If the surface of the part is polished.
    D. If the corrosion inhibitors are added to the developer.
    B. When the thickness of the coating becomes too heavy.
    (this multiple choice question has been scrambled)
  10. When is a non-aqueous wet developer generally preferred?
    A. When using a fluorescent penetrant on an as-cast surface.
    B. when the dryer oven temperature is above 121°C. (250°F)
    C. when it is essential to obtain as smooth and as even a coating as possible.
    D. When using a fluorescent penetrant on a wire brushed weld.
    C. when it is essential to obtain as smooth and as even a coating as possible
    (this multiple choice question has been scrambled)
  11. The best method of drying after the application of a wet developer is normally:
    a. blotting the surface gently with absorbive paper toweling.
    b. Allowing the part to dry slowly at or slightly above the ambient temperature
    c. Rapid drying with a normal room temperature air blast.
    d. Rapid drying with circulating hot air at 77°-107°C (170°-225°F)
    d. Rapid drying with circulating hot air at 77°-107°C (170°-225°F)
  12. Removal of residual penetrant or developer materials by a suitable post-cleaning technique is advantageous in which of the following cases?
    A. where it could interfere with subsequent processes or with service
    B. where it could provide a contrasting background
    C. Where it could assist in the lattice structure
    D. where it could assist in the emulsification of the penetrant bleed-out.
    A. where it could interfere with subsequent processes or with service
    (this multiple choice question has been scrambled)
  13. Post-cleaning is particularly important where residual penetrant or developer materials may combine with other materials in service to produce:
    A. Proper surface tension
    B. False penetrant indications
    C. corrosive action
    D. a contrasting background.
    C. corrosive action
    (this multiple choice question has been scrambled)
  14. Post-cleaning should be performed:
    A. With the part chilled to cause the materials to lose their cohesion.
    B. With the part warm to enhance the solubility of penetrant material
    C. after several hours because the drier the materials are, the easier they will wipe off.
    D. as soon as possible because the materials will be easier to remove
    D. as soon as possible because the materials will be easier to remove
    (this multiple choice question has been scrambled)
  15. When using post-emulsifiable fluorescent penetrant on small parts where sulfur or chlorine residual is deemed harmful.
    A. low sulphur and low chlorine content penetrant materials should be used and the part should be post-cleaned by solvent wipe.
    B. Low sulphur and low chlorine penetrant materials should be used and the part should be post-cleaned in an automatic detergent wash.
    C. Color contrast should be used so that any residue can be readily seen and removed.
    D. Fluorescent materials should be used and the part should be detergent-washed
    B. Low sulphur and low chlorine penetrant materials should be used and the part should be post-cleaned in an automatic detergent wash.
    (this multiple choice question has been scrambled)
  16. “Eyeball fluorescence” should be considered when arranging black light for testing, because direct or reflected black light shining into the inspector’s eyes:
    A. even though harmless, can become extremely annoying and will impair inspector effectiveness
    B. is harmless and of no consequence
    C. could cause tissue damage
    D. even though annoying, it will not impair inspector effectiveness
    A. even though harmless, can become extremely annoying and will impair inspector effectiveness
    (this multiple choice question has been scrambled)
  17. Residual acids and chromates are more detrimental to the fluorescent water-wash process than other processes because:
    A. emulsifiers neutralize the effects of the acids and chromates
    B. the fluorescent dyes in all processes are equally affected
    C. acids and oxidizing agents react with the fluorescent dyes only in the presence of water
    D. acids and oxidizing agents react with the fluorescent dyes only in the presence of emulsifiers
    C. acids and oxidizing agents react with the fluorescent dyes only in the presence of water
    (this multiple choice question has been scrambled)
  18. Due to the nature of penetrant material, most methods have which of the following adverse effects on operator health?
    A. Penetrant methods include materials which can cause dermatitis if proper precautions are not observed.
    B. penetrants are a hazard due to their inorganic base.
    C. Modern penetrants have been improved to be virtually hazard free
    D. Penetrant materials contain hallucinogens that can cause a sense of drunkenness
    A. Penetrant methods include materials which can cause dermatitis if proper precautions are not observed.
    (this multiple choice question has been scrambled)
  19. Which of the following is an advantage of post-emulsifiable methods over water-washable methods?
    A. the excess penetrant removal is accomplished by water spray.
    B. The overall test time is shortened
    C. Their sensitivity is easy to control
    D. They usually exhibit higher sensitivity to tight cracks
    D. They usually exhibit higher sensitivity to tight cracks
    (this multiple choice question has been scrambled)
  20. When compared to other methods, which of the items below are disadvantages of water-emulsifiable visible dye methods?
    A. requirements of ordinary light
    B. degree of sensitivity to acidity and alkalinity
    C. test time
    D. portability
    C. test time
    (this multiple choice question has been scrambled)
  21. he type of penetrant to be used on an investment casting should be:
    A. Solvent removable because of size and shape
    B. Solvent removable for greater visibility
    C. Post-emulsifiable fluorescent for maximum sensitivity and water washability.
    D. water-washable fluorescent for adequate sensitivity and water washability.
    C. Post-emulsifiable fluorescent for maximum sensitivity and water washability.
    (this multiple choice question has been scrambled)
  22. Which of the following techniques has been found to be effective for aiding penetration in certain instances in commercial application?
    A. vacuum and pressure
    B. ultrasonic pumping
    C. heating the penetrant
    D. vibration
    D. vibration
    (this multiple choice question has been scrambled)
  23. a. locate fine cracks in teeth prior to the availability of X-rays
    b. locate defects in artificial teeth prior to mounting them
    c. verify questionable information gathered from X-rays
    d. identify the filling material
    b. locate defects in artificial teeth prior to mounting them
  24. There is a variety of equipment available for precleaning parts prior to penetrant application. Of the following, the recommended method, if practical, is:
    A. solvent or chemical tanks
    B. vapor degreasers
    C. water-detergent washing machines
    D. sand or grit blasters
    B. vapor degreasers
    (this multiple choice question has been scrambled)
  25. If modular equipment has been obtained for a penetrant inspection system using fluorescent post-emulsifiable penetrant and wet developer, the dryer should be placed:
    A. before the emulsifier tank
    B. before the developer tank
    C. after the wash unit
    D. after the developer tank
    D. after the developer tank
    (this multiple choice question has been scrambled)
  26. In a modular equipment system using a water-washable fluorescent penetrant and dry developer, black light should be available:
    A. after the oven cycle
    B. at the wash station
    C. at the developer station
    D. at the penetrant station
    B. at the wash station
    (this multiple choice question has been scrambled)
  27. When a large number of parts are inspected using dry developer that is applied by dipping, the tank should be equipped with:
    A. an electrostatic charger
    B. a developer replenisher
    C. an exhaust system
    D. an agitator
    C. an exhaust system
    (this multiple choice question has been scrambled)
  28. Filters for black light effectively remove:
    a. natural white light
    b. radiation of a wavelength above 300 nm (3 000 Å) units
    c. visible light from the energy given off by the mercury arc
    d. fluorescence from the penetrant
    c. visible light from the energy given off by the mercury arc
  29. Super-bright fluorescent penetrants may be:
    A. as sensitive in dim daylight as it is in darkness
    B. less sensitive in dim daylight than color contrast penetrant materials
    C. more sensitive in dim daylight than color contrast penetrant materials
    D. more sensitive than normal fluorescent penetrants but they cannot be used in daylight
    C. more sensitive in dim daylight than color contrast penetrant materials
    (this multiple choice question has been scrambled)
  30. The use of high power spot bulbs for color contrast penetrants:
    A. will reduce eye fatique
    B. is acceptable provided the light is not shielded
    C. should be avoided as too much glare may occur
    D. is acceptable provided the light is shielded
    C. should be avoided as too much glare may occur
    (this multiple choice question has been scrambled)
  31. A good penetrant must be:
    A. highly volatile
    B. highly viscous
    C. an inorganic base liquid
    D. inert with respect to the materials being tested
    D. inert with respect to the materials being tested
    (this multiple choice question has been scrambled)
  32. Wetting ability is measured by the:
    A. density
    B. surface tension
    C. contact angle
    D. specific gravity
    C. contact angle
    (this multiple choice question has been scrambled)
  33. Which of the following functions does a developer perform?
    A. “blots” the penetrant by drawing it out of discontinuities
    B. masks out nonrelevant indications
    C. provides a non contrasting background
    D. dries out the surface of the part
    A. “blots” the penetrant by drawing it out of discontinuities
    (this multiple choice question has been scrambled)
  34. The method that uses a color contrast penetrant in conjunction with a developer containing a low intensity fluoragent is called:
    A. contrast fluorescent method
    B. reversed fluorescent method
    C. reversed contrast method
    D. fluorescent developer method
    B. reversed fluorescent method
    (this multiple choice question has been scrambled)
  35. When inspection using fluorescent penetrant methods, indications will appear as a:
    A. brilliant yellow-green glow against a white background
    B. brilliant yellow-green glow against a deep violet-blue background
    C. soft white glow against a gray background
    D. bright yellow-green glow against a black background.
    B. brilliant yellow-green glow against a deep violet-blue background
    (this multiple choice question has been scrambled)
  36. A visible dye indication will usually appear as a:
    A. red color against a glowing white background
    B. bright red glow against a white background
    C. red color against a gray background
    D. red color against a white background
    D. red color against a white background
    (this multiple choice question has been scrambled)
  37. When the reversed fluorescent method is used and inspection is performed under black light, indications will show up as:
    A. yellow-green lines or spots against a glowing background
    B. dark spots or lines against a deep violet-blue background
    C. dark spots or lines against a lightly glowing background
    D. there is no such method
    C. dark spots or lines against a lightly glowing background
    (this multiple choice question has been scrambled)
  38. If an indication reappears after the original developer has been removed and another coat is applied, the discontinuity:
    A. is probably shrinkage
    B. contains a reservoir of penetrant
    C. is most likely a crack
    D. is most likely porosity
    B. contains a reservoir of penetrant
    (this multiple choice question has been scrambled)
  39. If, upon reprocessing, a faint indication fails to reappear, what could be the cause?
    A. the indication is probably due to a small flaw
    B. reprocessing has resealed the opening
    C. it was probably a false indication
    D. the area has been overcleaned
    C. it was probably a false indication
    (this multiple choice question has been scrambled)
  40. A network of interconnecting jagged lines appearing in hard fired, unglazed ceramic products would be an indication of:
    A. fatique cracks
    B. shrinkage cracks
    C. grinding cracks
    D. thermal shock
    D. thermal shock
    (this multiple choice question has been scrambled)
  41. Porosity indications in ceramics would appear:
    A. as minute cracks
    B. more intense than porosity indications in metals
    C. less intense than porosity indications in metals
    D. essentially the same as porosity indications in metals
    D. essentially the same as porosity indications in metals
    (this multiple choice question has been scrambled)
  42. When inspecting glass and looking for very fine cracks, the preferred method is:
    A. electrified particle
    B. post-emulsifiable fluorescent
    C. post-emulsifiable color contrast
    D. water-washable fluorescent
    A. electrified particle
    (this multiple choice question has been scrambled)
  43. When inspecting a hard fired ceramic that is very porous, the best inspection method would be the:
    A. emulsifiable color contrast method
    B. electrified particle method
    C. brittle enamel method
    D. filtered particle method
    D. filtered particle method
    (this multiple choice question has been scrambled)
  44. A partially welded forging lap would probably:
    A. give no indication
    B. appear as a broad, continuous line
    C. appear as an intermittent line
    D. appear as a very thin, continuous line
    C. appear as an intermittent line
    (this multiple choice question has been scrambled)
  45. A ragged line of variable width and numerous branches on castings caused by a difference in cooling rates between thick and thinner sections, would most likely be an indication of:
    A. shrinkage
    B. hot tear
    C. lap
    D. cold shut
    B. hot tear
    (this multiple choice question has been scrambled)
  46. A deep crater crack will frequently appear as a:
    A. fine linear indication
    B. rounded indication
    C. small tight crack
    D. faint intermittent line
    B. rounded indication
    (this multiple choice question has been scrambled)
  47. he forces generated by capillary attraction caused a liquid to rise spontaneously in a capillary tube. These forces are also involved in the:
    A. entry of a liquid into a crack.
    B. Flash point of a liquid
    C. Solubility of a liquid
    D. Chemical inertness of a liquid
    A. entry of a liquid into a crack.
    (this multiple choice question has been scrambled)
  48. Viscosity has a considerable effect on some of the practical aspects of the use of penetrant. It is an important factor in the:
    A. speed with which a penetrant will enter a defect
    B. solubility of contaminants
    C. degree of fluorescence emitted
    D. washability of a penetrant
    A. speed with which a penetrant will enter a defect
    (this multiple choice question has been scrambled)
  49. One of the two most important properties of a good penetrant is wetting ability. Wetting ability is :
    A. A function of viscosity and increases as surface tension decreases
    B. measured by contact angle and is not related to surface tension.
    C. Measured by surface tension and increases as contact angle decreases
    D. Measured by contact angle and decreases as surface tension increases
    B. measured by contact angle and is not related to surface tension.
    (this multiple choice question has been scrambled)
  50. To make water a relatively good penetrant:
    A. Water is a good penetrant and no additives are needed
    B. A wetting agent must be added to reduce wetting ability
    C. A wetting agent must be added to increase surface tension
    D. a wetting agent must be added to reduce surface tension.
    A. Water is a good penetrant and no additives are needed
    (this multiple choice question has been scrambled)
  51. A penetrant that will spread over the surface of the test area in a smooth, even film despite a small amount of surface contamination is said to have:
    A. high viscosity
    B. wetting ability
    C. low evaporation
    D. low viscosity
    B. wetting ability
    (this multiple choice question has been scrambled)
  52. The sensitivity of two penetrants for crack detection is best compared by:
    A. measuring the contact angles in a wetting test
    B. using cracked aluminum blocks
    C. using a hydrometer to measure specific gravity
    D. the meniscus test
    B. using cracked aluminum blocks
    (this multiple choice question has been scrambled)
  53. For post-emulsifiable penetrants, a good method for establishing emulsifying time is by:
    A. the water drop-through test
    B. the water-tolerance test
    C. using published book values
    D. experimentation
    D. experimentation
    (this multiple choice question has been scrambled)
  54. A newly mixed batch of wet developer should:
    A. be checked by a hydrometer
    B. have 0.03 to 0.04 L per 3.8 L (1 to 1.5 oz per 1 gal) of ammonia added to stabilize the mixture
    C. stand for 4 to 5 hours prior to use
    D. be agitated for 30 to 40 minutes
    C. stand for 4 to 5 hours prior to use
    (this multiple choice question has been scrambled)
  55. The test used to measure the sensitivity of a penetrant to water contamination based on the amount of water is the:
    A. hydrometer test
    B. a water drop-through test
    C. water tolerance test
    D. photofluorometer test
    C. water tolerance test
    (this multiple choice question has been scrambled)
  56. When performing an evaluation of the fluorescent ability of a penetrant, the value that is normally sought is the:
    A. amount of actual light emitted by indications
    B. amount of black light necessary to cause the material to fluoresce
    C. relative amount of light emitted by the fluorescent material compared to other penetrants.
    D. Relative amount of light emitted by the fluorescent material compared to the light emitted by the background.
    C. relative amount of light emitted by the fluorescent material compared to other penetrants.
    (this multiple choice question has been scrambled)
  57. he most accurate method for evaluating quantitative values for the emitted light of fluorescent materials is the use of a:
    A. spectrophotometer
    B. filter-photometer
    C. nefluoro-photometer
    D. photofluorometer
    A. spectrophotometer
    (this multiple choice question has been scrambled)
  58. The ability of an indication to be seen can be assigned a value called the contrast ratio. This ratio is based on the amount of:
    A. light reflected by the background as opposed to the amount of light absorbed by the dye.
    B. Light reflected by the background as opposed to the amount of light reflected by the dye
    C. Light absorbed by the background as opposed to the amount of light reflected by the dye.
    D. white light present as opposed to the amount of light absorbed by the dye
    B. Light reflected by the background as opposed to the amount of light reflected by the dye
    (this multiple choice question has been scrambled)
  59. The contrast ratio of a red dye penetrant to a white developer is normally about:
    A. 23 to 1
    B. 9 to 2
    C. 9 to 1
    D. 6 to 1
    E. 33 to 1
    D. 6 to 1
    (this multiple choice question has been scrambled)
  60. Cracked plated strips are sometimes used to compare sensitivity. These plates usually have a brittle iron plating and are bent on:
    A. circumferential bending dies only
    B. cantilever and radial bend dies
    C. radial bending dies only
    D. cantilever bending dies only
    B. cantilever and radial bend dies
    (this multiple choice question has been scrambled)
  61. If a cantilever bending die is used to bend a plated strip, the cracks produced will:
    A. be equally spaced and of graduated depth
    B. cantilever bending dies are not used
    C. closer together and tighter near the clamped end
    D. be equally spaced and of uniform width
    C. closer together and tighter near the clamped end
    (this multiple choice question has been scrambled)
  62. The test object and standard penetrant materials should be within a particular temperature range. One of the reasons an excessively cold penetrant is undersirable is that as the temperature becomes lower:
    A. fewer volatile materials will be lost
    B. the viscosity increases
    C. the viscosity decreases
    D. the dyes degrade
    B. the viscosity increases
    (this multiple choice question has been scrambled)
  63. f the surface temperature of the test part is excessively hot, the:
    A. surface tension of the penetrant increases
    B. penetrant may loose some of its more volatile materials
    C. contact angle increases
    D. viscosity of the penetrant may be too high
    B. penetrant may loose some of its more volatile materials
    (this multiple choice question has been scrambled)
  64. Which of the following is a criterion for a good dryer?
    A. Be a warm air blast system.
    B. the ability to dry the surface slowly
    C. The electrical heating elements so that there is a guarantee that no contaminants can be introduce into the inspection process
    D. the ability to heat the part to an optimum temperature in a minimum of time so that the part is both dry and warm as promptly as possible.
    D. the ability to heat the part to an optimum temperature in a minimum of time so that the part is both dry and warm as promptly as possible.
    (this multiple choice question has been scrambled)
  65. What are the two most important properties that determine whether a liquid will have high penetrating ability?
    A. viscosity and cosine of contact angle
    B. surface tension and viscosity
    C. cosine of the contact angle and density
    D. density and surface tension
    D. density and surface tension
    (this multiple choice question has been scrambled)
  66. Where pre-cleaning is necessary and a residue-free solvent is used, which of the following is observed?
    A. the solvents are suitable for removing grease and oils, but are generally not adequate if solids are imbedded in void areas.
    B. the solvents are not suitable for removing grease
    C. the solvents are not suitable for removing oil
    D. the solvents should never be used for removing grease and oils
    A. the solvents are suitable for removing grease and oils, but are generally not adequate if solids are imbedded in void areas.
    (this multiple choice question has been scrambled)
  67. When utilizing the fluorescent post-emulsifiable penetrant method and performing the rinse cycle, which of the following will prevent over-rinsing?
    A. rinse before the penetrant is completely emulsified
    B. rinse only with water hotter than 43° C (110° F)
    C. discontinue the rinse as soon as the surface penetrant is removed from the part
    D. rinse after the penetrant is completely emulsified
    C. discontinue the rinse as soon as the surface penetrant is removed from the part
    (this multiple choice question has been scrambled)

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