Top 80+ Solved Liquid Penetrant Testing Level 2 MCQ Questions Answer
Q. A common application of an aluminium block containing quench cracks is to:
a. Determine penetrant test sensitivity
b. Compare performance of penetrant materials or processes
c. Determine effects of mechanical cleaning methods on penetrant test results
d. Determine effectiveness of cleaning techniques
Q. Which of the following is not (!) an advantage of a water washable fluorescentpenetrant 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
Q. When using a water washable penetrant testing process, why should the water rinsetemperature remain constant?
a. To avoid changes in rinse efficiency
b. To maintain the temperature of the part
c. To avoid over washing
d. To avoid under washing
Q. What is the proper technique for removal of excess penetrant from a part when using awater washable penetrant process?
a. Fine spray normal to the surface
b. Coarse spray normal to the surface
c. Fine spray at 45 degrees to the surface
d. Coarse spray at 45 degrees to the surface
Q. Which type of developer would you use to obtain the highest sensitivity test results?
a. Dry
b. Non-aqueous wet
c. Aqueous wet
d. Lipophilic
Q. What type of penetrant process would be best suited to an application at near freezingtemperatures?
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. None of the above
Q. Which type of developer does not (!) provide a contrasting background against whichto view penetrant indications?
a. Dry
b. Non-aqueous wet
c. Water soluble
d. Water suspendable
Q. Which type of developer should not be used with a visible dye penetrant process?
a. Dry
b. Non-aqueous wet
c. Water soluble
d. Water suspendable
Q. 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
Q. The most significant advantage of the visible solvent removable penetrant process is?
a. Its suitability for penetrant testing of article with rough surfaces
b. Portability
c. Its non-corrosive properties
d. Ability to allow retest
Q. Which penetrant test processes commonly use the same penetrants?
a. Water washable
b. Water washable and solvent removable
c. Solvent removable and post emulsifier
d. None of the above
Q. Mercury vapour black lights may be extinguished if the supply voltage drops belowabout:
a. 120 volts
b. 90 volts
c. 220 volts
d. 200 volts
Q. The output of a mercury vapour black light depends on:
a. Cleanliness of its filter
b. Age of the bulb
c. Both a and b
d. None of the above
Q. When a mercury vapour black light is first turned on, what minimum warm-up time is normally required?
a. None
b. 2 to 3 minutes
c. 5 minutes
d. 10 minutes
Q. When a mercury vapour black light is inadvertently cut off, approximately how long should it be allowed to cool before attempting to restart?
a. Not required
b. 2 to 3 minutes
c. 5 minutes
d. 10 minutes