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Pt Qqq Flashcards

1
Q

1.What is the cause of a forging burst?

a) Improper cold reduction during fabrication
b) it is caused by entrapped gas
c) Forging at incorrect temperatures
d) It is caused by non-uniform cooling

A

C

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2
Q
  1. Which of the following is not good practice when performing a liquid penetrant test?

a) Applying emulsifier with a brush
b) Applying the emulsifier by dipping the part in the emulsifier
c) Applying developer by spraying
d) Removal of water-washable penetrant with water

A

a) Applying emulsifier with a brush

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3
Q
  1. The test used to measure the sensitivity of a penetrant, by measuring the extent of water contamination of the penetrant, is referred to as___________
    a) the water drop through test
    b) the water content test
    c) the hydrometer test
    d) the sensitivity test
A

b) the water content test

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4
Q
  1. Non aqueous wet developers are usually supplied in pressurised cans and is__________

a) Held in suspension in a water solution
b) Completely dissolved in a water solution
c) Held in suspension in a solvent base
d) Completely dissolved in a solvent base

A

C

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5
Q
  1. What is a suitable dwell time for tight, surface breaking crack-like indications (assume that the temperature range is within acceptable limits)?

a) Between 1 to 3 minutes
b) Between 3 to 5 minutes
c) Between 5 to 10 minutes
d) More than 30 minutes

A

d) More than 30 minutes

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6
Q

6?
A water washable penetrant

A

A water washable penetrant

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7
Q
  1. The generally used liquid penetrant term ‘over wash’, refers to the excess removal of which of the following?

a) Surface contaminants
b) Penetrant
c) Developer
d) Solvent remover

A

b) Penetrant

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7
Q

7 .disadvantage of liquid penetrant test

A

b

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8
Q

8.Which of the following penetrants are least likely to be over wasted?
a) Water wastable penetrants
b) Solvent removable penetrants
c) Post emulsified penetrants.
d) None of the above

A

c) Post emulsified penetrants.

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9
Q
  1. Developers can be subdivided into the following group?

a) Dry powder developers
b) Non aqueous wet developers
c) Water-based wet developers
d) All of the above

A

a) Dry powder developers
b) Non aqueous wet developers
c) Water-based wet developers
d) All of the above

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10
Q
  1. The selection of liquid penetrant technique does not depend on?

a) Sensitivity required
b) Number of articles to be tested
c) Configuration of the test specimen
d) Test specimen properties such as magnetic capability

A

d) Test specimen properties such as magnetic capability

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11
Q
  1. Which of the following chemical elements is normally held to a minimum in liquid penetrant materials such as cleaner, penetrant and developer?

a) Sulphur
b) Oxygen
c) Carbon
d) Nitrogen

A

a) Sulphur

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12
Q
  1. Which of the following surface cleaning methods should be avoided because they tend to close discontinuities by peening or cold working the specimen surface?

a) Abrasive blasting
b) Wire brushes
c) Metal scrapers
d) All of the above.

A

a) Abrasive blasting
b) Wire brushes
c) Metal scrapers
d) All of the above.

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13
Q
  1. Which of the following techniques ace not suitable for the application of the emulsifier?
    a) Dipping
    b) Spraying
    c) Brushing
    d) Immersion
A

c) Brushing

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13
Q
  1. Liquid Oxygen (LOX) compatible materials must be used when articles inspected are expected to come in contact with ___________________

a) Liquid or gaseous Sulphur
b) Liquid or gaseous chlorine
c) Liquid or gaseous fluorine
d) Liquid or gaseous oxygen

A

d) Liquid or gaseous oxygen

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14
Q
  1. Liquid oxygen (LOX compatible materials generally consist of the following

a) Water based Penetrants and non aqueous developer
b) Water based penetrants and developers
c) Solvent removable penetrants and water based developers
d) Post emulsified penetrants and water based developers

A

d) Post emulsified penetrants and water based developers

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15
Q
  1. Surface breaking defects can only be detected when the imperfection area being tested is

a) Horizontal and the defect on the top surface
b) Horizontal and the detect on the bottom surface (ie, upside down)
c) vertical
d) All of the above

A

a) Horizontal and the defect on the top surface
b) Horizontal and the detect on the bottom surface (ie, upside down)
c) vertical
d) All of the above

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16
Q
  1. Which of the following is the most sensitive developer?

a) Dy powder developer
b) Non-aqueous wet developer
c) Water suspendable wet developer
d) Water soluble wet developer

A

b) Non-aqueous wet developer

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17
Q

19.Which of the following penetrants are most useful for detecting wide shallow surface breaking defects?

a) Water-washable penetrants
b) Solvent removable penetrants
c) Post emulsified penetrants!
d) None of the above

A

C

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18
Q
  1. Which developer is effective when inspecting sharp fillets, holes and threaded articles?

a) Dry powder developers
b) Non-aqueous wet developers
c) Water-based wet developers
d) All of the above

A

a) Dry powder developers

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19
Q

21.During a visible, solvent removable penetrant test, complete removable is indicated by
a) Dryness of sample surface
b) Clean rinse water
c) Completion of the rinse cycle
d) Absence of red dye on the cleaning towels

A

d) Absence of red dye on the cleaning towels

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20
Q
  1. Which liquid penetrant is best suited for portable applications in the field

a) Solvent removable penetrant
b) Water washable penetrant
c) Post emulsified penetrant
d) Fluorescent penetrant

A

a) Solvent removable penetrant

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21
Q
  1. When a small diameter tube is placed in a glass of water, water rises in the tube to a level above the adjacent water surface. This is called___________

a) Viscosity
b) Capillary action
c) Blotting action
d) Reverse barometric pressure.

A

b) Capillary action

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22
Q
  1. The colour of fluorescent penetrant under the presence of a white light is

a) Yellow -Green
b) Colourless
c) Blue
d) green

A

a) Yellow -Green

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23
Q
  1. When performing fluorescent water washable penetrant examination, excess penetrant is normally removed___________

a) By a hydrophilic scrubber under white light
b) By water wash under white soft
c) By water wash under black light
d) By solvent wash under black light

A

c) By water wash under black light

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23
Q
  1. Actual emulsification times are determined to?

a) Experiment during technique qualification
b) Manufacturing recommendations
c) Code requirements
d) Not required since it is always 1 min

A

b) Manufacturing recommendations

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24
Q
  1. Which of the following is a source of false indications?

a) A keyway
b) A riveted joint
c) Bolt threads
d) Penetrant transferred from the surface of an adjacent test specimen

A

d) Penetrant transferred from the surface of an adjacent test specimen

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25
Q
  1. Which of the following is the primary disadvantage of liquid penetrant testing?

a) Penetrant testing cannot to used on ferromagnetic material.
b) Penetrant testing cannot locate shallow surface discontinuities
c) Penetrant testing cannot be used on non metallic surfaces
d) Penetrant testing cannot locate sub surface discontinuities.

A

d) Penetrant testing cannot locate sub surface discontinuities.

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26
Q
  1. In penetrant testing, the time period from developer application to inspections is often referred to as:

a) Emulsification time.
b) Development time.
c) Dwell time.
d) None of the above.

A

b) Development time.

27
Q
  1. Which of the following materials cannot be tested by the usual liquid penetrant tests?

a) Unglazed porous ceramic.
b) titanium
c) High alloy steel.
d) Cast iron.

A

a) Unglazed porous ceramic.

27
Q
  1. liquid penetrant testing can be performed on which of the following types of material?

a) Ferromagnetic
b) Non ferromagnetic
c) Nonmetallic
d) All of the above

A

a) Ferromagnetic
b) Non ferromagnetic
c) Nonmetallic
d) All of the above

28
Q
  1. Which of the following is an advantage of liquid penetrant testing?

a) Liquid penetrants are very sensitive to fine subsurface cracks
b) Liquid penetrants can only be applied to flat sheet materials
c) Flaws will remain visible until wiped off reducing the need to indicate repair areas of defective parts.
d) Test are difficult to apply, and very often expensive

A

c) Flaws will remain visible until wiped off reducing the need to indicate repair areas of defective parts.

29
Q
  1. Liquid penetrant testing is a non destructive testing method which locates surface discontinuities based on the___________

a) Detergent action of the penetrant
b) Viscous action ed the penetrant
c) Capillary action of the penetrant
d) Diffusion action of the penetrant

A

c) Capillary action of the penetrant

30
Q
  1. To ensure optimum visibility, the liquid penetrant contains_______________

a) Fluorescent dye visible under black light
b) Coloured dye visible under ultraviolet light
c) Fluorescent dye visible under white light
d) Coloured dye visible under black light

A

a) Fluorescent dye visible under black light

31
Q
  1. What is one of the requirements of the cleaning solution?

a) I must be water dissolvable so that water could be used as a fusing media
b) I must be volatile so that easily evaporate out of the discontinuity
c) it must be colouress so that & does not create any background during the inspection

A

b) I must be volatile so that easily evaporate out of the discontinuity

32
Q

36.Which of the following penetrants are available in LOX compatible form?

a) Visible Solvent Removable Penetrant
b) Fluorescent Post Emulsifiable Penetrant
c) Visible Post Emulsifiable Penetrant
d) Fluorescent Water Washable Penetrant

A

d) Fluorescent Water Washable Penetrant

32
Q
  1. Tiny round indications, also referred to as small dots, are generally caused by which of the following true indications?

a) Forging lap
b) Coarse grain structure
c) Cold shuts
d) Die marks

A

c) Cold shuts

33
Q
  1. Which of the following penetrants can be contaminated with water?

a) Visible Solvent Removable Penetrant
b) Fluorescent Post Emulsifiable Penetrant
c) Visible Post Emulsifiable Penetrant
d) Visible Water Washable Penetrant

A

d) Visible Water Washable Penetrant

34
Q
  1. The purpose of using a developer is?

a) To create a contrasting background for the penetrant, to ensure better visibility of indications
b) to assist in the reverse capillary action due to the absorption ability of the developer
c) to prevent the part from corroding after the liquid penetrant test
d) both a and b are correct

A

d) both a and b are correct

35
Q
  1. What additional surface preparation or cleaning must be performed on a machined or ground casting. prior to penetrant testing?

a) Vapour degreasing
b) Etching
c) Detergent wash
d) Ultrasonic cleaning

A

b) Etching

36
Q
  1. Which penetrant process is the most sensitive to detect fine discontinuities?

a) Visible Solvent Removable Penetrant process
b) Fluorescent Post Emulsifiable Penetrant process
c) Visible Post Emulsifiable Penetrant process
d) Visible Water Washable Penetrant process

A

b) Fluorescent Post Emulsifiable Penetrant process

37
Q
  1. What action is necessary to ensure a suitable test result, if the penetrant is allowed to dry on the test piece?

a) Repeat the test, beginning with the pre-cleaning operation
b) Re-wet the penetrant, begin dwell time again and continue
c) Clean the penetrant off the surface and develop normally
d) Clean the penetrant off the surface wait 5 minutes and develop normally

A

a) Repeat the test, beginning with the pre-cleaning operation

38
Q
  1. Excess penetrant removal is a two-step process with which of the following penetrants?

a) Water washable
b) Post emulsified
c) Solvent removable
d) Liquid oxygen applications

A

b) Post emulsified

39
Q
  1. When performing a fluorescent penetrant test, excess penetrant is normally removed____________

a) by a hydrophilic scrubber
b) under the UV light
c) by a solvent spray
d) by vapor degreasing

A

b) under the UV light

40
Q
  1. Which of the following is not a good property of a liquid penetrant?

a) It holds the dye in suspension
b) It spreads evenly across the part
c) It is easily removed
d) It has a very high viscosity

A

a) It holds the dye in suspension

40
Q
  1. The intensity of an ultraviolet light source shall be measured with a calibrated ultraviolet light intensity meter and shall have a minimum reading of____________

a) 365 m at a distance of 380mm
b) 1000 Lux at a distance of 380mm
c) 20 Lux at a distance of 380mm
d) 1000 pW /cm? at a distance of 380mm

A

d) 1000 pW /cm? at a distance of 380mm

41
Q
  1. When testing nickel based alloys, all materials shall be analysed for__________
    a) Chlorine content
    b) Fluorine content
    c) iodine content
    d) Sulphur content
A

d) Sulphur content

42
Q
  1. Which type of emulsifier would make a penetrant washable in a solvent (oil) based solution —

a) Hydrophilic emulsifier
b) Lipophilic emulsifier
c) Hydromorphic emulsifier
d) Hygroscopic emulsifier

A

b) Lipophilic emulsifier

43
Q
  1. Which developer has the highest sensitivity for finding small tight crack like indications?

a) Non aqueous wet developer
b) Water based wet developer
c) Dry powder
d) All are equally sensitive

A

a) Non aqueous wet developer

44
Q

50.The process of identifying the origin of an indication is referred to as what?

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

A

b) Evaluation

45
Q
  1. What is a disadvantage of the solvent removable penetrant process?

a) it is the least sensitive of the penetrant processes
b) It is not well suited for use on rough surfaces
c) It is highly portable
d) No water is required for its use

A

b) It is not well suited for use on rough surfaces

46
Q
  1. Dry developer is applied____________

a) immediately before removal of excess penetrant
b) immediately after removal of excess penetrant
c) after a drying period following removal of excess penetrant
d) for maximum sensitivity results

A

c) after a drying period following removal of excess penetrant

47
Q
  1. 500 steel bolts, each 20mm OD x 50mm Long with rolled thread has to be inspected within the shortest possible time (assume that you have all required consumables and apparatus). Which of the following would be the most effective means of applying the water washable penetrant?

a) Spraying
b) Brushing
c) immersion
d) pouring

A

c) immersion

47
Q

53.Which of the following statements is true when removing excess water washable penetrant?

a) A coarse spray should be applied at an angle of 90* to the inspection surface
b) Water temperature should be above 110* C to speed up the evaporation of the penetrant
c) The sample surface temperature should be between 43* C - 52* C
d) The water pressure should be constant and should not exceed 345 kPa (50 psi)

A

d) The water pressure should be constant and should not exceed 345 kPa (50 psi)

48
Q
  1. Which of the following techniques require that a penetrant be applied to one side of the specimen and developer to the other side?
    a) Gas leak technique
    b) Leak-through technique
    c) Vacuum decay technique
    d) Pneumatic pressure test technique
A

b) Leak-through technique

49
Q
  1. What is the name of the test which can be described as follows: *100ml of penetrant is placed in a boiling flask with a similar quantity of moisture free xylene. The condensate is collected in a graduated tube to show the percentage of water by volume”?

a) Water content test
b) Water Wash ability test
c) Viscosity test
d) Hydrometer test

A

a) Water content test

50
Q
  1. As a billet is rolled into bar stock, __________ are caused by the folding of metal due to improper rolling or by a crack in original billet.

a) Stringers
b) Seams
c) Pipes
d) Bursts

A

b) Seams

51
Q
  1. Which of the following true indications cannot be regarded as a casting discontinuity?

a) Hot tears
b) Porosity
c) Laps
d) Blow holes

A

b) Porosity

52
Q
  1. Which penetrant process is best suited to the detection of discontinuities in a test piece having threads and key ways?

a) Visible Solvent Removable Penetrant process
b) Fluorescent Water Washable Penetrant process
c) Fluorescent Post Emulsifiable Penetrant process
d) Visible Post Emulsifiable Penetrant process

A

b) Fluorescent Water Washable Penetrant process

53
Q
  1. In the solvent removable penetrant process, excess penetrant is removed using__________

a) water spray
b) hydrophilic emulsifier
c) solvent spray
d) clean, lint free towels slightly moistened with solvent

A

d) clean, lint free towels slightly moistened with solvent

54
Q
  1. 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) it drawn into discontinues by gravity.

A

c) Is drawn into discontinuities by capillary action.

55
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 wash ability of the penetrant
c) reduce the sensitivity of the test.
d) Increase the viscosity of the penetrant.

A

b) adversely affect the wash ability of the penetrant

55
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) Use an ultraviolet light to determine if the excess penetrant has been rinsed away.

A

b) Do not apply an excessive amount of solvent.

56
Q
  1. How long must a part 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.

57
Q
  1. Which of the following penetrant methods does not normally require a source of electricity to property conduct a test?
    a) Water-washable fluorescent penetrant method.
    b) Post-emulsification fluorescent penetrant method.
    c) Visible solvent removable penetrant method.
    d) None of the above requires
A

c) Visible solvent removable penetrant method.

58
Q

The term used to define the tendency of certain liquid to penetrant ____

a) Surface test
b) Capitulary action
c) viscosity
d) wetting ability

A

b) Capitulary action

59
Q

67.The most widely accepted method for removing excessive water washable penetrant form the surface of a test specimen is__________

a) by means of a wet rag
b) try means of a water spray rinse
c) by washing the part directly in water
d) ty immersing the part in water

A

b) try means of a water spray rinse

60
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

61
Q
  1. Insufficient rinsing of water -washable 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

62
Q
  1. Which of the following surface conditions could have a detrimental effect on a liquid penetrant test?

a) A wet surface
b) A rough weld
c) An oily surface
d) All of the above could have a detrimental effect.

A

d) All of the above could have a detrimental effect.

qc 2 (7 decks)

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