Toughest Trivia Questions On Liquid Penetrant Testing! Quiz

103 Questions | By Cheriewesson | Updated: Mar 22, 2022 | Attempts: 2233

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Toughest Trivia Questions On Liquid Penetrant Testing! Quiz - Quiz

Toughest Trivia Questions on Liquid Penetrant Testing! This type of testing is carried put on a material in order to detect any flaws in the surface or make the more visible. If you are looking to refresh your understanding on this type of testing, be sure to take the challenging quiz below. All the best and be sure to follow all the steps.

Questions and Answers

1.

Liquid penetrant inspection requires that the liquid possess a __________ surface tension.
- A.
  
  High
- B.
  
  Low
- C.
  
  Medium
- D.
  
  Surface tension is not an important requirement of the liquid
2.

In Canada, NDE personnel are trained and certified to which standard?
- A.
  
  AECB Section 18
- B.
  
  CWB
- C.
  
  CGSB 48.9712
- D.
  
  Ministry of Labour Codes
3.

The function of an emulsifier is to:
- A.
  
  Help the penetrant enter a discontinuity by reducing the penetrant's surface tension
- B.
  
  Mix directly with a fluorescent penetrant to increase its fluorescence
- C.
  
  Render the excess post-emulsifiable penetrant water-washable
- D.
  
  Blot the penetrant back to the surface to produce an indication
4.

The forerunner to modern PT was known as the:
- A.
  
  Hot whiting method
- B.
  
  Oil and whiting method
- C.
  
  Ring method
- D.
  
  Water washable method
5.

Pre-cleaning in PT refers to:
- A.
  
  Ensuring that the surface of the material is free of contaminants
- B.
  
  Ensuring the penetrants are free of contaminants
- C.
  
  Ensuring that a discontinuity is free of contaminants
- D.
  
  Both (a) and (c)
6.

Dwell time is:
- A.
  
  The length of time the emulsifier is left on a material surface
- B.
  
  The length of time a developer is left on a material surface
- C.
  
  The length of time a penetrant is left on a material, to enter into a near-to-surface discontinuity
- D.
  
  None of the above
7.

The physics that enables the penetrant to enter into a discontinuity is called:
- A.
  
  Caterpillar force
- B.
  
  Gravitational force
- C.
  
  Capillary force
- D.
  
  None of the above
8.

Black-light intensity is stated as a minimum of 1000 microwatts per centimeter squared. Why?
- A.
  
  To provide adequate visible light in the darkened viewing booth
- B.
  
  The assist the operator when removing excess fluorescent penetrant from the material surface
- C.
  
  To cause the fluorescent dye in the penetrant to "glow"
- D.
  
  To ensure the fluorescent dye reaches its peak fluorescence
9.

According to CGSB Standards, temperatures in hot air drying ovens should be maintained at
- A.
  
  Maximum 71 degrees Celsius
- B.
  
  Option 2
- C.
  
  16-43 degrees Celsius
- D.
  
  The dryer temperature should be as high as possible to allow faster drying
10.

Dark adaptation is stated by most codes as a minimum of three minutes. Why?
- A.
  
  To allow the operator's eyes time to contract for maximum seeing in the darkened inspection area
- B.
  
  To allow the operator's eyes time to dilate for maximum seeing in the darkened inspection area
- C.
  
  To allow the operator's eyes time to expand for maximum seeing of visible dye penetrant indications
- D.
  
  To allow the operator's eyes time to contract for maximum seeing of fluorescent dye penetrant indications
11.

The most important property that enables the penetrant to enter into a discontinuity is:
- A.
  
  Flash point
- B.
  
  Penetrability
- C.
  
  Viscosity
- D.
  
  Surface tenson
12.

Immersion dwell is used when:
- A.
  
  Anticipated discontinuities are shallow and wide
- B.
  
  There are large numbers of test parts to be inspected
- C.
  
  Extremely long dwell times are needed
- D.
  
  All of the above
13.

"Inspection" can be performed by trainees, Level 2 and Level 3.
- A.
  
  True
- B.
  
  False
14.

As a rule of thumb, developing time is a minimum of one half of the penetrant dwell time.
- A.
  
  True
- B.
  
  False
15.

Which of the following developers is the most sensitive?
- A.
  
  Dry developer
- B.
  
  Aqueous developer
- C.
  
  Non-aqueous developer
- D.
  
  None of the above
16.

Which of the following developers is most suitable for parts that are complex or have rough surfaces?
- A.
  
  Dry developer
- B.
  
  Aqueous developer
- C.
  
  Non-aqueous developer
- D.
  
  None of the above
17.

Which of the following is the best reason why excessive drying of a part is not desired?
- A.
  
  The extra time is wasted
- B.
  
  The developer may lose its blotting ability
- C.
  
  A reduction in resolution may result
- D.
  
  The excess developer may be difficult to remove
18.

The contrast ratios for visible penetrants and fluorescent penetrants are respectively:
- A.
  
  10 to 1 and 30 to 1
- B.
  
  6 to 1 and 300 to 1
- C.
  
  500 to 1 and 9 to 1
- D.
  
  None of the above
19.

The notable difference between phosphorescence and fluorescence is:
- A.
  
  Effecting radiation
- B.
  
  Persistence after applied radiation
- C.
  
  Frequency of transmitted light
- D.
  
  Temperature
20.

When preparing an acid solution for precleaning, you should:
- A.
  
  Add the acid to water
- B.
  
  Add the water to acid
- C.
  
  Mix the acid to water in equal proportions
- D.
  
  Add the acid to alkaline solution
21.

An important function of emulsification is:
- A.
  
  Stop developing action
- B.
  
  Improve signal-to-noise ratio
- C.
  
  Freeze defects in position
- D.
  
  Reduce bleed-out time
22.

Specific gravity is checked using a:
- A.
  
  Hygrometer
- B.
  
  Hydrometer
- C.
  
  Three point balance
- D.
  
  Litmus paper
23.

Dyes used in fluorescent penetrant fluoresce in the:
- A.
  
  Blue-green
- B.
  
  Yellow-green
- C.
  
  Red-orange
- D.
  
  All of the above
24.

Viscosity is measured in units called:
- A.
  
  Dynes/cm
- B.
  
  Mm/sec
- C.
  
  Centistokes
- D.
  
  Milligrams per cc
25.

The sensitivity of a liquid penetrant system is determined by:
- A.
  
  Contrast ratios
- B.
  
  Colour intensity
- C.
  
  Ability to detect small defects
- D.
  
  Frequency of black-light used