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PT 2 > gen > Flashcards

gen Flashcards

1
Q
  1. As well as providing a contrasting background for penetrant flaw detection, developer also enhances the :

a. Post Cleaning process
b. Emulsification process
c. Bleed out process
d. Drying

A

c. Bleed out process

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2
Q
  1. Lipophilic and hydrophilic are terms used in which of the following penetrant techniques?

a. Colour contrast
b. Post Emulsifiable fluorescent.
c. Fluorescent water washable
d. Combined colour contrast and fluorescent

A

b. Post Emulsifiable fluorescent.

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3
Q
  1. Which of the following dye penetrant systems can be used if water and electricity are not available?

A. Solvent removable colour contrast
b. Post Emulsifiable colour contrast
c. Post Emulsifiable fluorescent
d. Any of the above can be used.

A

A. Solvent removable colour contrast

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4
Q
  1. Penetrant flaw detection can be used on which of the following materials?
    a. Aluminum
    b. Bras
    c. High carbon steel
    d. All those listed above
A

a. Aluminum
b. Bras
c. High carbon steel
d. All those listed above

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5
Q
  1. The wavelength of a UV(A) Irradiation emitted by inspection lamps used in fluorescent testing is:

a. below 315 nm
b. between 315nm and 400 nm
c. above 400 nm
d. between 500 nm and 800 nm ?

A

b. between 315nm and 400 nm

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6
Q
  1. When testing components with the water- washable penetrant process in conjunction with dry developer , the developer should be applied immediately after:
    a. Development
    b. Excess penetrant removal
    c. The dwell time
    d. Drying
A

b. Excess penetrant removal

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7
Q
  1. the performance of fluorescent penetrants may be adversely affected by which of the following?

a. prolonged exposure to UV light
b. Acids on the test surface
c. Oils and grease on the test surface
d. All of the above

A

d. All of the above

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8
Q
  1. What is a radiometer used to ensure to measure on the dye penetrant inspection?
    a. Visual contrast between indications and their background
    b. Ambient white light levels
    c. Irradiance from a UV(a) inspection lamp
    d. The wavelength of UV(a) radiation
A

c. Irradiance from a UV(a) inspection lamp

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9
Q
  1. What governs capillary pressure in the liquid penetrant inspection process?
    a. Surface tension, type of material to be inspected and its temp.
    b. Ambient temp, type of material to be inspected and the dimensions of any surface breaking flaws.
    c. Viscosity, wetting ability and type of flaw
    d. Wetting ability, surface tension and dimensions of surface breaking flaws
A

d. Wetting ability, surface tension and dimensions of surface breaking flaws

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10
Q

Electrostatic spray, flock gun and insuffiators and 3 items of equipment for the application of :
a. Wet developers
b. Dry developers
c. Emulsifiers
d. Penetrant

A

b. Dry developers

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11
Q
  1. Which of the following statements is most relevant to penetrant inspection?

a. lipophilic penetrant inspections must always include a water wash immediately prior to application of the penetrant
b. lipophilic penetrant inspections must always include a water wash immediately prior to application of the Emulsifier
c. Hydrophilic penetrants inspections do not incorporate a water wash immediately prior to application of the Emulsifier
d. to improve uniformity hydrophilic penetrant inspections should always include a water wash immediately prior to application of the emulsifier

A

c. Hydrophilic penetrants inspections do not incorporate a water wash immediately prior to application of the Emulsifier

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12
Q
  1. A specified development time should take the following into consideration.
    a. type of developer used
    b. type of penetrant used
    c. the of defect being sought
    d. all of the above
A

a. type of developer used
b. type of penetrant used
c. the of defect being sought
d. all of the above

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13
Q
  1. The flash point for solvent removable penetrant is usually:

a. not a necessary consideration
b. -10°C
c. higher than 55*C
d. less than 65°C

A

c. higher than 55*C

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14
Q
  1. Which of the following is normally accepted as the most sensitive developer?

a. aqueous suspensible
b. dry powder
c. non-aqueous
d. aqueous soluble

A

c. non-aqueous

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15
Q
  1. Which stage of the penetrant process follows the penetrant dwell time?

a. Drying
b. excess penetrant removal
c. developer application
d. inspection

A

b. excess penetrant removal

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16
Q
  1. Which of the following is most likely to render the post-emulsification test ineffective?

a. too long of a penetrant time
b. too long of a developing time
c. too long of an emulsifying time
d. none of the above

A

c. too long of an emulsifying time

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17
Q

Which of the following is an acceptable method for applying penetrant?
a. dipping
b. spraying
c. brushing
d. all of the above are acceptable methods of applying penetrant

A

d. all of the above are acceptable methods of applying penetrant

18
Q
  1. Which of the following is not recommended for removing organic contaminants?
    a. ultrasonic cleaning
    b. wire brushing
    c. steam cleaning
    d. detergent cleaning
A

b. wire brushing

19
Q

the prime purpose of UV(A) radiation in fluorescent penetrant inspection Is:
a. to magnify indication
b. to make indications visible
C. to develop indications
d. to speed up inspection

A

b. to make indications visible

20
Q
  1. Which of the following must be removed from the test surface prior to penetrant testing?
    a. welding flux
    b. corrosion
    c. water
    d. all of the above are contaminants and must be removed prior to penetrant testing
A

D

21
Q
  1. Which of the following systems has a two-step penetrant removal process?
    a. solvent removable
    b. post emulsifiable
    c. water-washable
    d. none of the above
A

b. post emulsifiable

22
Q
  1. Development time depends on the:
    a. type of remover used
    b. type of developer used and type of discontinuity sought
    c. temperature of the test surface
    d. all the above
A

b. type of developer used and type of discontinuity sought

23
Q

Which of the following conditions will decrease the life of the bulb in a UV(A) inspection lamp?
a. line voltage fluctuations
b. changes in room temperature
c. dust on the face of the bulb
d. all of the above

A

a. line voltage fluctuations

24
Q
  1. The term used to define the period of time in which the test part is covered with penetrant is:

a. drain time
b. capillary time
c. dwell time
d. wetting time

A

c. dwell time

25
Q

Liquid penetrants become too viscous and lose sensitivity at temperatures:

a. above 38° C
b. between 10° and 38° C
c. below 20° C
d. below 10° C

A

D

26
Q

. What penetrant can be used on iron and steel products covered with scale?

a. colour contrast penetrant
b. solvent removable penetrant
c. fluorescent penetrant
d. dye penetrant inspection is impossible

A

d. dye penetrant inspection is impossible

27
Q

pW/cm2 is the Sl unit commonly used in dye penetrant inspection for measuring the:

a. viscosity of penetrant
b. wavelength of UV(A) radiation
c. wavelength of white light
d. level of UV(A) radiation at the test surface

A

c. wavelength of white light

28
Q
  1. Which of the following is used for comparison control checks on dye penetrant consumables?

a. a piece of thin plastic
b. a copper block
c. an austenic steel plaque
d. any piece of cracked material

A

c. an austenic steel plaque

29
Q
  1. A developer should have the following characteristics:

a. small particle size
b. Very coarse grain structure
c. should fluoresce easily
d. a low absorption rate

A

a. small particle size

30
Q
  1. an advantage of water washable colour contrast penetrant over water washable fluorescent penetrant is:

a. can be viewed in daylight
b. small indications can be more easily seen
c. less background on rough surfaces
d. A and C

A

d. A and C

31
Q
  1. Penetrant flaw detection installations should not be sited near manufacturing processes that are likely to:

a. cause vibration
b. aid the process of material control
c. Give rise to airbome contamination
d. reject material prior to subsequent processing

A

C

32
Q
  1. When using post-emulsifiable fluorescent penetrant UV(A) sources should be provided at which of the following process stations?

a. the penetrant dip station and the emulsifier station
b. the penetrant wash station and the final inspection station
c. the emulsifier station and the developer station
d. the developer station and the penetrant dip station

A

b. the penetrant wash station and the final inspection station

33
Q
  1. Which of the statements below best states the danger of using sand blasting for cleaning surfaces to be penetrant tested?

a. the discontinuities may be closed
b. oil contaminants might be sealed in the discontinuities
c. the sand used in the sand blasting operation may be forced into the discontinuity
d. the sand blasting operation may introduce discontinuities in the part

A

a. the discontinuities may be closed

34
Q
  1. Which of the following statements is not true?

a. visible dyes be used in conjunction with a fluorescent light for better viewing
b. a darkened area is not necessary for satisfactory inspection of parts under UV(A) light
c. fluorescent dyes glow yellow/green under UV(A) radiation
d. black light is another name for UV(A) light

A

b. a darkened area is not necessary for satisfactory inspection of parts under UV(A) light

35
Q
  1. If the minimum dwell time for a penetrant is 10 minutes:
    a. penetrant must remain on the test surface for no longer than 10 minutes
    b. penetrant will not have entered a discontinuity until 10 minutes has passed
    c. excess penetrant should not be removed until it has been on the test surface for 10 minutes
    d. none of the above are correct
A

c. excess penetrant should not be removed until it has been on the test surface for 10 minutes

36
Q
  1. When dry developer is used it must be applied to the surface:
    a. whilst it is still wet
    b. very thinly
    c. in a thick layer
    d. before the penetrant is applied
A

b. very thinly

37
Q
  1. Aqueous developers contain:
    a. developer in solution
    b. developer particles in suspension
    C. emulsifier
    d. both A and B
A

d. both A and B

38
Q
  1. When dye penetrants into a fissure, the capillary pressure depends upon:
    a. work piece grain size
    b. roughness of the work piece surface
    c. surface tension of the dye penetrant
    d. all of the above
A

c. surface tension of the dye penetrant

39
Q
  1. The presence of acid contamination may affect water-washable fluorescent dye penetrants, because acid:
    a. roughens the test piece surface
    b. erodes the entrance of narrow fissures
    C. degrades the fluorescence
    d. Will not mix with water
A

C. degrades the fluorescence

40
Q
  1. The most widely used dye penetrant inspection systems for ease of portability is:
    a. colour contrast, water-washable
    b. fluorescent, post-emulsfied
    c. colour contrast, solvent removable
    d. fluorescent. water-washable
A

c. colour contrast, solvent removable

PT 2 (8 decks)

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