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PT 2 > NDT PT 2 PART 3 > Flashcards

NDT PT 2 PART 3 Flashcards

1
Q
  1. Before conducting a liquid penetrant test, it is important to ensure the surface of the part is free from …
    a oil or grease
    b acids or chromates
    c traces of water
    d all of the above
A

d all of the above

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2
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 temperature 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 temperature is too high, the heat may degrade the effectiveness of
the penetrant

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3
Q
  1. Which of the following can be removed from the surface of a test specimen by vapour degreasing?

a oil
b paint
c phosphate coatings
d oxides

A

a oil

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3
Q
  1. Insufficient washing of fluorescent penetrants during the removal stage 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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4
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 properly applied
c essential because surface contaminants may prevent penetrant from gaining access to discontinuities
d required to eliminate possibility of showing no relevant indications

A

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

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5
Q
  1. Which one of the following conditions will affect the rate and extent a liquid penetrant will enter cracks, fissures and other small openings?

a the hardness of the specimen being tested
b the surface condition of the specimen being tested
c the colour of the penetrant
d the conductivity of the specimen being tested

A

b the surface condition of the specimen being tested

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6
Q
  1. The term used to define the period of time in which the test part is covered with penetrant is

a waiting time
b soak time (drain time)
c penetration time (dwell time)
d bleed-in-time

A

c penetration time (dwell time)

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6
Q
  1. Which of the following is NOT a basic inspection principle that applies to all penetrant methods?

a the penetrant must enter the discontinuity in order to form an indication
b All indications glow when illuminated with a black light
c a longer penetration is required for smaller discontinuities
d if the penetrant is washed out of the discontinuity, an indication will not be formed by that discontinuity

A

b All indications glow when illuminated with a black light

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7
Q
  1. When using a post emulsification (hydrophilic) penetrant, it is necessary to apply the emulsifier …

a before applying the penetrant
b after the water rinse operation
c after the dwell time has elapsed
d after the development time has elapsed

A

c after the dwell time has elapsed

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8
Q
  1. When conducting a fluorescent penetrant test, a commonly used technique for assuring that the excess penetrant has been removed prior to the application of a developer is to …

a blow compressed air over the surface
b chemically etch the surface
c blot the surface with absorbent paper
d view the surface under a black light

A

d view the surface under a black light

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9
Q
  1. Excess penetrant (all penetrant except that which is in discontinuities) is removed from the specimen …

a after the required penetrant dwell time has elapsed
b before the application of an emulsifier if post emulsifier penetrant is used
c by means of a steam cleaner
d only when water-washable penetrants are used

A

a after the required penetrant dwell time has elapsed

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9
Q
  1. The penetrant applied to the surface of a test specimen …

a seeps into discontinuities
b is absorbed by discontinuities
c is drawn into discontinuities by capillary action
d is drawn into discontinuities by gravity

A

c is drawn into discontinuities by capillary action

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10
Q
  1. When using a post-emulsifiable penetrant, the emulsifier time should be …

a as long as the penetrant dwell time
b one-half the penetrant dwell time
c the same as the developer
d only as long as necessary to effect removal of interfering background, but not
to reduce the sensitivity of the inspection

A

d only as long as necessary to effect removal of interfering background, but not
to reduce the sensitivity of the inspection

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11
Q
  1. Which of the following are 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

A

d all of the above

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12
Q
  1. Which of the following is an advantage of visible dye penetrants over fluorescent penetrants?

a visible dye penetrants do not require black light
b visible dye penetrants are more sensitive than fluorescent penetrants
c visible dye penetrants are superior in penetrants characteristics
d visible dye penetrants are not toxic while fluorescent penetrants are toxic

A

a visible dye penetrants do not require black light

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13
Q
  1. 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

A

a rubbing the penetrant over the surface

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14
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

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15
Q
  1. 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 the emulsifier

A

c after removal of the penetrant

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16
Q
  1. 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

A

d spraying or dipping

17
Q
  1. The terms “dry”, “aqueous wet”, and “non aqueous wet” are used to describe three different types of …

a emulsifiers
b cleaners
c developers
d penetrants

A

c developers

18
Q
  1. Which of the following is a type 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

19
Q
  1. When removing excess penetrant from the surface of a test specimen …
    a the penetrant removal operation must not remove the penetrant from discontinuities
    b sufficient excess penetrant must be removed to eliminate an interfering background
    c the use of a solvent dampened cloth is a common method of penetrant removal
    d all of the above
A

d all of the above

20
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

21
Q
  1. The purpose of using a developer on a test specimen is to …

a promote penetration of the penetrant
b 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

22
Q
  1. Which of the following is NOT an advantage of a water washable fluorescent penetrant process?

a) Excess penetrant is easily removed with a water wash
b) It is well suited to testing large quantities of small parts
c) it is readily removed from shallow discontinuities
d) It has low cost, low processing time compared to the post emulsified penetrant
process

A

c) it is readily removed from shallow discontinuities

23
Q
  1. Which type of developer would you use to obtain the highest sensitivity test results?
    a) Dry

b) Nonaqueous wet
c) Aqueous wet
d) Lipophillic

A

d) Lipophillic

24
Q
  1. Why might steel parts have a greater tendency towards rusting after penetrant testing?

a) Penetrant materials are normally corrosive
b) Penetrant materials residues are hydroscopic
c) any protective oils are removed during penetrant testing
d) this is true only if the developer and penetrant residues are not removed after testing

A

d) this is true only if the developer and penetrant residues are not removed after testing

25
Q
  1. The most important penetrant test processing time to control is …

a) Penetrant dwell time
b) Emulsifier contact time
c) Water rinse time
d) Development time

A

a) Penetrant dwell time

26
Q
  1. Acceptable methods of apply emulsifier are:

a) Dipping
b) Foam
c) Spraying
d) All of the above

A

d) All of the above

26
Q
  1. Which of the following is normally considered acceptable practice?

a) Sand blasting a soft aluminum part during pre-cleaning
b) Performing a fluorescent penetrant test followed by a visible penetrant test
c) Performing a re-test on a part tested with a water washable penetrant process
d) Removing excess penetrant with a water spray

A

d) Removing excess penetrant with a water spray

27
Q
  1. An advantage of the post emulsifiable penetrant testing process is that …

a) Test pieces can be re-processed several times with little loss of sensitivity
b) It is the most economical penetrant testing process
c) It is highly susceptible to overwashing
d) It is not self emulsifying

A

a) Test pieces can be re-processed several times with little loss of sensitivity

27
Q
  1. At night, the human eye is most sensitive to which of the following?

a) yellow-green
b) Red
c) Blue-violet
d) Orange

A

a) yellow-green

28
Q
  1. Overwashing during excess penetrant removal is less likely with which penetrant testing process?

a) Solvent removable
b) Water washable
c) Post emulsifiable
d) Both a & c.

A

b) Water washable

28
Q
  1. Indications which are caused by design or construction of the test piece are referred to as …

a) Relevant
b) Non-relevant
c) False
d) Real

A

b) Non-relevant

29
Q
  1. Indications which are caused by something other than a discontinuity are
    referred to as …

a) Relevant
b) Non-relevant
c) False
d) Real

A

b) Non-relevant

30
Q
  1. When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece, which has been immersed in the penetrant because …
    a) Too much penetrant on the part surface may lead to more rapid penetrant and
    over-sensitivity
    b) A thinner layer of penetrant is likely to have higher capillary action and, thus, be
    more sensitive to fine discontinuities
    c) A thinner layer of penetrant will result in less penetrant contamination in the
    emulsifier tank
    d) None of the above
A

b) A thinner layer of penetrant is likely to have higher capillary action and, thus, be
more sensitive to fine discontinuities

31
Q
  1. When performing a post emulsifiable penetrant test, the test piece does not rinse acceptably clean during normal processing. What should be done?

a) Return the test piece to the emulsifier and repeat the emulsifier
b) Increase water temperature and pressure
c) Remove the excess penetrant with solvent remover and process the remainder of the test normally
d) Clean the test piece and re-process through the complete penetrant test
process

A

d) Clean the test piece and re-process through the complete penetrant test
process

32
Q
  1. The process of classifying indications as relevant, non relevant, or false is called

a) Inspection
b) Evaluation
c) Interpretation
d) Examination

A

c) Interpretation

33
Q
  1. Which of the following developers would you expect to be the least sensitive?

a) Water suspendable wet (immersion)
b) Water suspendable wet (spray)
c) Dry immersion (dip)
d) Non-aqueous wet (solvent spray)

A

c) Dry immersion (dip)

34
Q
  1. What is the wavelength of light we see after UV radiation has hit the
    fluorescent penetrant?
A

555nm

35
Q
  1. In a Liquid penetrant testing, a refractomer is used to measure …
a)	Penetrant concentration
b)	Concentration of water based wet developers
c)	Emulsifier concentration
d)	Cleaner concentration
A

a) Penetrant concentration

36
Q
  1. What is the wavelength of UV A radiation?
A

365nm

37
Q
  1. What would a disc (10cm in diameter) be used for in the Dye Penetrant Testing
    lab?
A

Evaluate dry developer

38
Q
  1. Is it allowed to mix consumables from different manufacturers?
A

No

39
Q
  1. Are you going to pass the exams at the end of the course?

a) I hope so
b) I think so
c) I’m going to study hard and pass it with flying colours - lol
d) I don’t care, I make enough money as it is

A

c) I’m going to study hard and pass it with flying colours - lol

40
Q
A

PT 2 (8 decks)

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