Top 150+ Solved Liquid Penetrant Testing Level 1 MCQ Questions Answer
Q. During the water rinse step of the water washable penetrant process, what is thedesired angle of the spray to the surface?
a. Normal
b. 30 degrees
c. 45 degrees
d. 75 degrees
Q. Which type of emulsifier is designed to be used as a ‘scrubber’?
a. Hydrophilic
b. Hydrophobic
c. Lipophilic
d. Fluoroscopic
Q. Post cleaning is especially important when:
a. Post emulsified penetrants are used
b. Phosphate containing detergents are used
c. Chlorinated hydrocarbons are used
d. The test object will be used in a liquid oxygen environment
Q. When using a hydrophilic emulsifier, the amount of penetrant removed is mostaffected by:
a. Solution strength and time of spray
b. Penetrant dwell time
c. Emulsifier dwell time
d. Adequacy of pre-clean
Q. If a mercury vapour arc black light is inadvertently turned off, how soon may it berestarted?
a. Immediately
b. 5 minutes
c. 10 minutes
d. 15 minutes
Q. Which of the following is normally prohibited as a method of removing excesspenetrant when using the solvent removable penetrant process?
a. A water spray
b. A hydrophilic scrubber
c. A solvent spray
d. Clean with lint free towels moistened with solvent
Q. When performing a fluorescent penetrant examination, excess penetrant is normallyremoved:
a. By a hydrophilic scrubber
b. Under UV light
c. By solvent spray
d. By vapour degreasing
Q. During a visible, solvent removable penetrant test, complete penetrant removal isindicated by:
a. Absence of red indications on the test piece surface
b. Clean rinse water
c. Completion of the rinse cycle
d. Absence of red dye on the cleaning towels
Q. Which of the following is a function of a developer
a. Providing a contrasting background for visible dye indications
b. Making the penetrant water washable
c. Penetrating into discontinuities open to the surface
d. Dissolve organic soils on the test piece surface
Q. Which of the following is a function of a developer?
a. Providing a contrasting background for visible dye indications
b. Accentuates presence of discontinuities by causing a penetrant indication to spread out over a larger area
c. Provides capillary paths to aid the bleed out process
d. All of the above
Q. Which of the following developers is applied before the drying operation?
a. Dry
b. Non-aqueous wet
c. Water based wet
d. None of the above
Q. The most sensitive type of developer for the detection of fine discontinuities is:
a. Water soluble
b. Non-aqueous wet
c. Dry
d. Water suspendable
Q. Which of the following is the most sensitive developer in descending order?
a. Dry, water soluble, water suspendable
b. Non-aqueous wet, water soluble, water suspendable ,dry
c. Non-aqueous wet, dry, water soluble
d. Water suspendable, water soluble, non-aqueous wet
Q. Low sulphur and chlorine penetrant materials would be used for testing:
a. Aluminium, steel and plastics
b. Tool steels, chrome vanadium steel and ferritic stainless steels
c. Austenitic stainless steels, nickel alloys and titanium
d. Magnetic materials
Q. Which type of developer may be either in suspension or a solution?
a. Dry
b. Non-aqueous wet
c. Water based wet
d. None of the above