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PT L1 > LEVEL 1 PART 2 > Flashcards

LEVEL 1 PART 2 Flashcards

1
Q
  1. The method used to remove excess visible dye penetrant from a test specimen is primarily determined by the:

А. surface roughness of the specimen.
B. type of material being tested.
C. length of penetration Time.
D. all of the above.

A

А. surface roughness of the specimen.

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2
Q
  1. Which of the following is a used of developer used in penetrant inspection?
    A. Dry
    B. Aqueous particulate
    C. Non-aqueous particulate
    D. Water soluble
    E. All of the above
A

E. All of the above

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3
Q
  1. When penetrant testing parts. the temperature of the parts should be near room temperature. If the part is at a low temperature when tested:

А. the penetrant may become viscous.
B. the penetrant may evaporate very rapidly.
С. the color intensity of the penetrant will decrease.
D. the penetrant will tend to adhere to the surface of the part.

A

А. the penetrant may become viscous.

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4
Q
  1. If a part to be penetrant tested is first heated to a high temperature:

A. The penetrant may become viscous.
B. the penetrant may “Flash” or evaporate very rapidly.
C. the penetrant may lose some of its color brilliance.
D. the penetrant will better show discontinuities.

A

B. the penetrant may “Flash” or evaporate very rapidly.

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5
Q
  1. Penetrants may he classified or subdivided by the method used to remove excess penetrant. Which of the following is a proper classification in accordance with this statement?

A. Non-solvent-removable
B. Vapor degreased
Brush removable
D. Water washable

A

D. Water washable

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6
Q
  1. The problem with retesting a test specimen which has been previously Tested using liquid penetrant is that:

A. the penetrant may form beads on the surface.
B. the dried penetrant residue left in discontinuities may not readily dissolve and the retest may be misleading.
C. the penetrant will lose a great deal of its color brilliance.
D. None of the above are correct statements.

A

B. the dried penetrant residue left in discontinuities may not readily dissolve and the retest may be misleading.

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7
Q
  1. Which of the following conditions will decrease the life of a black light bulb?

A. Line voltage fluctuations
B. Dust on the face of the bulb
C. Changes in room temperature
D. All of the above

A

B. Dust on the face of the bulb

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8
Q
  1. When a penetrant is applied to a part by submerging the part in a penetrant bath:

A. the part must remain in the penetrant bath during the entire penetration time.
B. the part must remain in the penetrant bath for at least one-half the penetration time.
C. the part must remain in the penetrant bath only long enough to ensure the surface is covered with penetrant.
D. the part must not remain in the penetrant bath for a period in excess of five minutes.

A

C. the part must remain in the penetrant bath only long enough to ensure the surface is covered with penetrant.

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9
Q
  1. Which of the following statements do not apply to developers used during penetrant testing?

A. Developers are normally highly Fluorescent.
B. Developers often furnish a contrasting background during inspection.
C. Developers absorb or blot the penetrant that remains in discontinuities after the rinse operation has been completed.
D. Developers may be either wet or dry.

A

A. Developers are normally highly Fluorescent.

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10
Q
  1. Which of the following statements is true?

A. Sandblasting is a generally accepted method for cleaning a surface that is to be penetrant Tested.
B. Parts should be heated prior to the application of a penetrant.
C. If the dryer is too high. the heat may degrade the effectiveness of the penetrant.
D. Development time should be at least twice the penetration time.

A

C. If the dryer is too high. the heat may degrade the effectiveness of the penetrant.

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11
Q
  1. When using a wet developer:

A. a thick layer of developer is better than a thin layer for showing very fine cracks.
В. compressed air should be used to remove excess developer.
C. a black developer will show better contrast than will a white developer.
D. A thin layer of developer is better than a thick layer for showing very fine cracks.

A

D. A thin layer of developer is better than a thick layer for showing very fine cracks.

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12
Q
  1. Which of the following statements is not true?

A. Sandblasting is not & recommended method for preparing for a penetrant test.
B. It is not necessary to remove a film of oil from a part prior to penetrant testing because the penetrant is basically an oil.
C. Vspor degreasing is a very good method for removing oil from the surface of the part to be penetrant tested.
D. A voltage regulator should be used with a black light if the line voltage fluctuates.

A

B. It is not necessary to remove a film of oil from a part prior to penetrant testing because the penetrant is basically an oil.

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13
Q
  1. A red against white background discontinuity image is most likely to be seen when:

А. dry developers are used.
B. Visible dye penetrants are used.
C. Fluorescent post-emulsification penetrants are used.
D. wet developers are used.

A

B. Visible dye penetrants are used.

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14
Q
  1. Which of the following can be removed from the surface of a test specimen by vapor degreasing?

A. Oil
B. Paint
C. Phosphate costings
D. Oxides

A

A. Oil

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15
Q
  1. The purpose for using a developer on a test specimen is to:

A. promote penetration of the penetrant.
В. absorb emulsifier residues.
C. absorb penetrant from discontinuities and to provide a contrasting background.
D. contribute to drying the surface for better observation.

A

C. absorb penetrant from discontinuities and to provide a contrasting background.

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16
Q
  1. Which one of the following statements is an incorrect use of crack panels (blocks)?

А. To establish a standard size of crack which can be reproduced as needed.
B. To determine the relative sensitivities of two different penetrants.
C. To determine if a penetrant has lost or has reduced brilliance on fluorescent penetrants because of contamination.
D. To determine the degree or method of cleaning necessary To remove penetrant on the surface without removing it from the cracks.

A

А. To establish a standard size of crack which can be reproduced as needed.

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17
Q
  1. Which of the following is generally accepted as the most important precaution when using water-washable penetrants?

A. Be sure that the part is washed thoroughly during the rinse operation.
B. Be sure the recommended dwell time is not exceeded.
C. Avoid over rinsing the part.
D. Avoid over application of emulsifier.

A

C. Avoid over rinsing the part.

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18
Q
  1. Which of the following is generally accepted as the most important precaution when using solvent-removable penetrants?

A. Do not apply an excessive amount of emulsifier.
B. Do not apply an excessive amount of solvent.
C. Do not use an insufficient rinse pressure.
D. Be sure to use a black light to determine if the excess penetrant has been rinsed away.

A

B. Do not apply an excessive amount of solvent.

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19
Q
  1. Insufficient rinsing of fluorescent penetrants will result in:

A. subsequent corrosion of the surface.
B. difficulty in the application of developer.
C. excessive bleed out.
D. excessive background Fluorescence.

A

D. excessive background Fluorescence.

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20
Q
  1. Which of the following is not a safety precaution that applies when handling penetrant materials?

A. Prolonged contact of penetrant with skin should be avoided because the oil or solvent base may cause skin irritation.
B. Excessive amounts of developer powders should not be inhaled.
C. Airline respirators and complete protective clothing must be worn at all times.
D. Because the solvents used with the visible penetrant process are flammable, this material should be kept away from open dames

A

C. Airline respirators and complete protective clothing must be worn at all times.

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21
Q
  1. How long must a par be kept wet with penetrant before the removal process is started?

A. It varies depending on the Type of penetrant used, the Type of material to be tested, the sensitivity desired, and the type of discontinuities to be detected.
B. Since the penetrant will penetrate a discontinuity of any size in a matter of seconds, the removal process should start as soon as possible after the penetrant has been applied.
C. 3 minutes.
D. 10 minutes.

A

A. It varies depending on the Type of penetrant used, the Type of material to be tested, the sensitivity desired, and the type of discontinuities to be detected.

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22
Q
  1. Which of the following factors will affect resolution of penetrant indications?

A. The sensitivity of the penetrant materials used.
B. The surface condition of the part.
C. The tempera cure of the part and or penetrant.
D. All of the above.

A

D. All of the above.

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23
Q
  1. serious loss of water in a wet developer mix or an excessive over concentration of developer powder can cause:

A. a loss of fluorescence during the inspection operation.
B. non-relevant indications.
C. cracking of the developer coating during the drying operation.
D. none of the above.

A

C. cracking of the developer coating during the drying operation.

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24
Q
  1. Why is it not advisable to look directly into a black light?

A. It Will cause permanent damage to the eyes.
B. It will possibly cloud the vision of the person looking into the light for a short period of time.
C. It will cause temporary total blindness.
D. None of the above.

A

B. It will possibly cloud the vision of the person looking into the light for a short period of time.

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25
Q
  1. When using dry developer, the drying operation is performed:

A. immediately after removal of excess penetrant.
В. before the inspection step
C. thoroughly.
D all of the above.

A

D all of the above.

26
Q
  1. The failure to completely remove acid materials from a part before fluorescent penetrant is applied will result in:

A. a decrease in the fluorescence of the penetrant.
B. a need to double the penetrating time.
C. a permanent stain on the part.
D. all of the above.

A

A. a decrease in the fluorescence of the penetrant.

27
Q
  1. Penetrant is applied to a part by dipping. The part is then placed on a rack while the penetrant Seeps into discontinuities. If the penetration time is too long, it will be difficult to rinse the penetrant from the part. If this happens, the normal rinsing properties can be restored by:

A. chilling the part to a temperature of 40°F.
B. heating the part to a temperature of 130°F.
C. redipping the part.
D. applying a wet developer before attempting to rinse the part.

A

C. redipping the part.

28
Q
  1. When drying parts during a penetrant test?

A. the parts are normally dried at room temperature.
B. the parts are normally dried by a circulating hot-air dryer.
C. the parts should be dried in an oven set at a temperature of 500°
D. the parts should be dried by cool forced air.

A

B. the parts are normally dried by a circulating hot-air dryer.

29
Q
  1. The contamination of a water-washable penetrant with an excessive amount of water will:

A. reduce the penetrating quality of the penetrant.
B. adversely affect the washability of the penetrant.
C. both a and b are correct answers.
D. neither a nor b are correct answers.

A

C. both a and b are correct answers.

30
Q
  1. Which of the following penetrant methods does not normally require a source of electricity to properly conduct a test?

A. Water-washable fluorescent penetrant method.
B. Post-emulsification fluorescent penetrant method.
C. Visible dye penetrant method.
D. None of the above require a source of electricity.

A

C. Visible dye penetrant method.

31
Q
  1. When using a fluorescent penetrant, the actual inspection must be performed:

A. in a brightly lighted room.
B. which the part at a temperature between 125°F and 175 °F.
C. immediately after the developer has been applied.
D. in a darkened area under a black light.

A

D. in a darkened area under a black light.

32
Q
  1. 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. Post emulsification fluorescent penetrant
D. Any of the above

A

A. Visible dye penetrant

33
Q
  1. On which of the following materials would a liquid penetrant test method not be effective?

A. Aluminum
B. Unglazed ceramics
C. Glass
D. Magnesium

A

B. Unglazed ceramics

34
Q
  1. Which of the following is not an advantage of the liquid penetrant rest method?

A. The liquid penetrant lest method is adaptable to production inspection of small parts.
B. Liquid penetrant testing can locate fine cracks.
C. The liquid penetrant lest method is a relatively simple test method.
D. The liquid penetrant lest method is effective at any temperature.

A

D. The liquid penetrant lest method is effective at any temperature.

35
Q
  1. A good penetrant must do all of the following, except:

A. be able to readily penetrate very fine openings.
B. evaporate very rapidly.
C. be able to remain in relatively coarse openings.
D. be easily removed from the surface after testing.

A

B. evaporate very rapidly.

36
Q
  1. Which of the following is not a property of a developer used in liquid penetrant dye testing?

A. The material must be absorbent.
B. The material must form a thin and uniform coating over a surface.
C. The material must be fluorescent if used with fluorescent penetrants.
D. The material must not contain ingredients harmful or toxic to the operator.

A

C. The material must be fluorescent if used with fluorescent penetrants.

37
Q
  1. Developers, improperly used:

A. may obscure indications.
B. may be difficult to remove.
C. may become contaminated.
D. all of the above.

A

D. all of the above.

38
Q

98, Color-contrast penetrants are commercially available in which of the following variations?

A. Normal solvent clean type
B. Water-wash type
C. post-emulsification type
D. All of the above

A

D. All of the above

39
Q
  1. Which of the following could be a source of false indications on a test specimen?

A. Penetrant on the test table.
B. Penetrant on the hands of the inspector.
C. Contamination of dry or wet developer which penetrant,
D. All of the above.

A

D. All of the above.

40
Q
  1. Cleaning of the part prior to penetrant inspection is:

A. not required.
B. important because if the part is not clean, the developer cannot be improperly applied.
C. essential because surface contaminants may prevent penetrant from gaining access to discontinuities.
D. required to eliminate possibility of showing non-relevant indications.

A

C. essential because surface contaminants may prevent penetrant from gaining access to discontinuities.

41
Q
  1. A suitable filter must be used at all times over a black light bulb because:

A. loo much white light will be present if the filter is not in place.
B. the human eye may be damaged without it.
C. the filler filters out undesired wave lengths.
D. all of the above.

A

D. all of the above.

41
Q
  1. When using fluorescent pater washable penetrant, adequate rinsing of the part is assured by:

A. timing of rinse cycle.
В. scrubbing of part surface.
C. rinsing under black light.
D. using high pressure air with water.

A

C. rinsing under black light.

42
Q
  1. The time allowed for the penetrant to enter discontinuities which may be present is the:

A. emulsification time.
В. application time.
C. penetration time.
D. drain time.

A

C. penetration time.

42
Q
  1. A part processed by visible dye penetrant inspection should not normally be reprocessed by fluorescent penetrant because:

A. developer may remain on the surface causing background.
B. most risible dyes kill fluorescence.
C. penetrants are not compatible.
D. interpretation will be difficult.

A

B. most risible dyes kill fluorescence.

43
Q
  1. A good commercial penetrant should have a:

A. low Rash point
B. high flash point.
С. medium flash point.
D. flash point is not a factor to be considered.

A

B. high flash point.

43
Q
  1. A material which, applied over the film of the penetrant on the surface of a part, mixes with the penetrant. and enables it to be washed off the surface is:

A. an emulsifier
B. a penetrant.
C. a developer.
D. an isomer.

A

A. an emulsifier

44
Q
  1. Which of the following penetrant systems is generally considered least sensitive?

A. Water washable - visible dye.
B. Solvent removable - visible dye.
C. Water washable - fluorescent dye.
D. Post-emulsification - visible dye.

A

A. Water washable - visible dye.

45
Q
  1. The best choice of a developer for use on a very smooth surface when using a fluorescent penetrant would be:

A. dry — fluffy.
B. dry - regular.
C. wet.
D. None of the above.

A

C. wet.

45
Q
  1. In penetrant examinations, the phase of the process requiring the greatest skill and most experience of the operator is:

A. precleaning.
B. establishing the emulsification time.
C. interpretation of results.
D. penetrant removal.

A

C. interpretation of results.

46
Q
  1. The purpose of an emulsifier is to:

A. combine with the penetrant to make the resultant mixture removable by a water rinse.
B. assist the blotting action of the developer.
C. increase the penetration of the penetrant into fine discontinuities.
D. eliminate false indications.

A

A. combine with the penetrant to make the resultant mixture removable by a water rinse.

47
Q
  1. Developer assists in the detection of liquid penetrant indications by:

A. providing a clean surface.
B. providing a contrasting background.
C. providing a dry surface.
D. emulsifying the penetrant.

A

B. providing a contrasting background.

47
Q
  1. Which of the following types of discontinuities would not be delectable by liquid penetrant examination?

A. Forging lap
B. Seam
C. Surface crack
D. Subsurface porosity

A

D. Subsurface porosity

48
Q
  1. What is the most universally used black light?

A. Incandescent lamps
В. Metallic carbon arcs
C. Tubular “BL” fluorescent lamps
D. Enclosed mercury-vapor are lamps

A

D. Enclosed mercury-vapor are lamps

49
Q
  1. Which of the following processes would be most sensitive to detecting very fine defects?

A. Oil-and-whiting process
B. Water-washable fluorescent process
C. post-emulsification process
D. Water-emulsifiable visible dye penetrant process

A

C. post-emulsification process

50
Q
  1. Which of the following methods should not be used to apply emulsifier when using the post emulsification fluorescent process?

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

A

D. Brushing emulsifier on the part

51
Q
  1. Which of the following would be the most desirable center wavelength for the output of the light source used
    in fluorescent processes?

A. 3200 A (320 nm)
B. 3650 A (365 nm)
C. 5200 A (520 nm)
D. 5650 A

A

B. 3650 A (365 nm)

52
Q
  1. Bleed-out of penetrant from a cold shut is an example of a:

A. false indication.
B. non-relevant indication.
С. true indication.
D. none of the above.

A

С. true indication.

53
Q
  1. which of the following actions is likely to result in a loss of sensitivity in the liquid penetrant examination?

A. Pre-cleaning test specimen with a vapor degreaser.
B. Applying penetrant by immersion rather than spraying.
C. Reprocessing a specimen which has already been examined by liquid penetrant examination method.
D. Using a post-emulsifiable penetrant rather than a solvent removable penetrant.

A

C. Reprocessing a specimen which has already been examined by liquid penetrant examination method.

54
Q
  1. Liquid penetrants become sluggish and lose sensitivity at temperatures:

A. above 100° F.
B between 50°F and 100°F.
C. below 50°F.
D. below 70° F.

A

C. below 50°F.

55
Q
  1. Why is it possible to flush a surface with a coarse water spray to which a water washable penetrant was ap. plied, remove the excessive penetrant, and not remove the penetrant which is in the defects?

A. The liquid will not wash the penetrant from the defects, because the penetrant has to be drawn out by the developer.
B. The nature of a water-washable penetrant is such that water will not dissolve the penetrant. It has to push the penetrant off the surface, which is why a spray is used.
C. The water droplets are relatively large and will not enter most defect openings.
D. A water spray should not be used. The penetrant should be removed by a cloth dampened with water.

A

C. The water droplets are relatively large and will not enter most defect openings.

PT L1 (5 decks)

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