Liquid Penetrant Level II Exam Questions Solved 100%
Which of the following discontinuities could be classified as a finishing processing discontinuity? -
Answers -Heat-treat crack
Aluminum alloy test specimens that have been tested by the liquid penetrant method should be
thoroughly cleaned after testing because: - Answers -the alkaline content of wet developers and most
emulsifiers could result in surface pitting, particularly in moist atmospheres.
Which factor would apply in determining the dwell time required for the penetrant to be effective? -
Answers -Type of discontinuity sought.
Which of the following physical properties, more than any other, determines what makes a material a
good penetrant? - Answers -No one single property determines if a material will or will not be a good
penetrant.
Which of the following discontinuities might be found in rolled plate? - Answers -Laminations
Which of the following is NOT recommended method of removing grease from a surface of a part to be
penetrant tested? - Answers -Hot water rinse
Which of the following is NOT a form in which penetrant developer is commonly available? - Answers -
High viscosity developer
When using post-emulsification penetrants, difficulties incurred during the washing operation can be
overcome by: - Answers -completely reprocessing the part from surface preparation on and by using a
longer emulsifier time.
The function of the emulsifier in the post-emulsification penetrant method is to: - Answers -react with
the surface penetrant to make the penetrant water-washable.
Which of the following is a discontinuity that might be found in forging? - Answers -Lap
Shrinkage cracks are usually found in what areas of a casting? - Answers -Abrupt changes in thickness
Which of the following is an advantage of visible dye penetrants over fluorescent penetrants? - Answers
-No special lighting is required.
Of the methods listed below, the most effective means of precleaning a test item prior to a penetrant
test is: - Answers -vapor degreasing
Which of the following statements concerning contaminating materials on the surface of a part to be
penetrant tested is NOT true? - Answers -The contaminant may retain the penetrant and thus increase
the sensitivity of the inspection
, Which of the statements below best states the danger of using sandblasting for cleaning surfaces to be
penetrant tested? - Answers -The discontinuities may be closed
The penetrant indication of a forging lap will normally be: - Answers -a continuous line
Which of the following is a discontinuity which might be found in sand castings: - Answers -Shrinkage
Why is it advisable to have a black light installed at the wash station? - Answers -To check the
effectiveness of the wash cycle
An important difference between non-water-washable penetrants and water-washable penetrants is
that: - Answers - water-washable penetrants contain an emulsifier, while non-water washable
penetrants do not
Which of the following are typical of foreign matter which might block the openings of discontinuities if
the surface of a test specimen is NOT properly cleaned? - Answers - All of the above. (Core and mold
material, scale, paint)
The speed with which a penetrant penetrates a surface flaw is influenced to the greatest extent by
which of the following properties? - Answers -Viscosity
Which of the following is a discontinuity that might be found in rolled bar stock? - Answers -Crack or
seam
Which of the following discontinuities could be classified as a primary processing discontinuity often
found in cast material - Answers -Porosity
Which of the following is a discontinuity that might be found in a forging? - Answers -Laps
A Crack type discontinuity will generally appear as: - Answers -a continuous line, either straight or
jagged.
A continuous linear indication can be caused by which of the following discontinuities? - Answers -Cracks
Which of the following discontinuities could be classified as a service induced discontinuity? - Answers -
Fatigue crack
When using a fluorescent, post-emulsifiable penetrant, the length of time the emulsifier is allowed to
remain on the part is critical when detecting shallow scratch-like discontinuities. The best length of time
should be: - Answers -determined by experimentation.
The emulsifier is used: - Answers - to emulsify the oil-soluble penetrant, thereby making it water
washable.
The penetrant indication for a cold shut on the surface of a casting will be: - Answers - a dotted or
smooth continuous line.
Which of the following discontinuities could be classified as a finishing processing discontinuity? -
Answers -Heat-treat crack
Aluminum alloy test specimens that have been tested by the liquid penetrant method should be
thoroughly cleaned after testing because: - Answers -the alkaline content of wet developers and most
emulsifiers could result in surface pitting, particularly in moist atmospheres.
Which factor would apply in determining the dwell time required for the penetrant to be effective? -
Answers -Type of discontinuity sought.
Which of the following physical properties, more than any other, determines what makes a material a
good penetrant? - Answers -No one single property determines if a material will or will not be a good
penetrant.
Which of the following discontinuities might be found in rolled plate? - Answers -Laminations
Which of the following is NOT recommended method of removing grease from a surface of a part to be
penetrant tested? - Answers -Hot water rinse
Which of the following is NOT a form in which penetrant developer is commonly available? - Answers -
High viscosity developer
When using post-emulsification penetrants, difficulties incurred during the washing operation can be
overcome by: - Answers -completely reprocessing the part from surface preparation on and by using a
longer emulsifier time.
The function of the emulsifier in the post-emulsification penetrant method is to: - Answers -react with
the surface penetrant to make the penetrant water-washable.
Which of the following is a discontinuity that might be found in forging? - Answers -Lap
Shrinkage cracks are usually found in what areas of a casting? - Answers -Abrupt changes in thickness
Which of the following is an advantage of visible dye penetrants over fluorescent penetrants? - Answers
-No special lighting is required.
Of the methods listed below, the most effective means of precleaning a test item prior to a penetrant
test is: - Answers -vapor degreasing
Which of the following statements concerning contaminating materials on the surface of a part to be
penetrant tested is NOT true? - Answers -The contaminant may retain the penetrant and thus increase
the sensitivity of the inspection
, Which of the statements below best states the danger of using sandblasting for cleaning surfaces to be
penetrant tested? - Answers -The discontinuities may be closed
The penetrant indication of a forging lap will normally be: - Answers -a continuous line
Which of the following is a discontinuity which might be found in sand castings: - Answers -Shrinkage
Why is it advisable to have a black light installed at the wash station? - Answers -To check the
effectiveness of the wash cycle
An important difference between non-water-washable penetrants and water-washable penetrants is
that: - Answers - water-washable penetrants contain an emulsifier, while non-water washable
penetrants do not
Which of the following are typical of foreign matter which might block the openings of discontinuities if
the surface of a test specimen is NOT properly cleaned? - Answers - All of the above. (Core and mold
material, scale, paint)
The speed with which a penetrant penetrates a surface flaw is influenced to the greatest extent by
which of the following properties? - Answers -Viscosity
Which of the following is a discontinuity that might be found in rolled bar stock? - Answers -Crack or
seam
Which of the following discontinuities could be classified as a primary processing discontinuity often
found in cast material - Answers -Porosity
Which of the following is a discontinuity that might be found in a forging? - Answers -Laps
A Crack type discontinuity will generally appear as: - Answers -a continuous line, either straight or
jagged.
A continuous linear indication can be caused by which of the following discontinuities? - Answers -Cracks
Which of the following discontinuities could be classified as a service induced discontinuity? - Answers -
Fatigue crack
When using a fluorescent, post-emulsifiable penetrant, the length of time the emulsifier is allowed to
remain on the part is critical when detecting shallow scratch-like discontinuities. The best length of time
should be: - Answers -determined by experimentation.
The emulsifier is used: - Answers - to emulsify the oil-soluble penetrant, thereby making it water
washable.
The penetrant indication for a cold shut on the surface of a casting will be: - Answers - a dotted or
smooth continuous line.
