FREE ENGINEERING AND STUDY GAMES ABOUT

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FREE ENGINEERING AND STUDY GAMES ABOUT

PENETRANT LVL 1 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -116 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: 78. Unneeded PT safety precautions?

• penetrant skin contact may cause irritation
• do not inhale excessive developer powders
• protective clothing and respirators must be worn
• keep flammable penetrants away from flames

Answer:

• protective clothing and respirators must be worn

Question 2: 72. Which of the following can be removed from the surface of a test specimen by vapor degreasing?

• oil
• paint
• phosphate coatings
• oxides

Answer:

• oil

Question 3: 79. Penetrant dwell time length?

• varies with penetrant type, component material, sensitivity desired, discontinuities sought
• penetrants penetrate in a matter of seconds, post clean should start ASAP after penetrant

applied.

• 3 min
• 10 min

Answer:

• varies with penetrant type, component material, sensitivity desired, discontinuities sought

Question 4: 31. The generally accepted minimum time period for eyes becoming accustomed to

the dark is:

• 1 to 5 min
• 5 to 10 min
• 10 to 15 min
• no waiting period is necessary

Answer:

• 1 to 5 min

Question 5: 11. All of the following basic inspection principles apply to the visible penetrant

methods except:

• the penetrant must enter the discontinuity in order to form an indication
• indications glow when illuminated with an ultraviolet light
• clea

Answer:

• indications glow when illuminated with an ultraviolet light

Question 6: 74. Incorrect crack panels (blocks) use?

• to find a standard reproducable crack size
• to find penetrant's relative sensitivities
• to gauge if penetrant is contaminated
• to find cleaning method to remove surface penetrant

Answer:

• to find a standard reproducable crack size

Question 7: 101. UV bulbs require suitable filters as:

• too much white light will be present if the filter is not in place
• the human eye may be damaged without it
• the filter filters out undesired wave lengths
• all of above

Answer:

• all of above

Question 8: 38. Danger of sandblast surface cleaning parts before penetrant testing?

• disc may be peened over and closed
• oils may be sealed in crevices
• blasting sand may be forced into discontinuity
• sandblasting may create discontinuities

Answer:

• disc may be peened over and closed

Question 9: 71. A red against white background discontinuity image is most likely to be seen

when:

• dry developers are used
• visible dye penetrants are used

• fluorescent PE penetrants are used
• wet developers are used

Answer:

• visible dye penetrants are used

Question 10: 83. When using dry developer, the drying operation is performed:

• immediately after removal of excess penetrant
• before the inspection step
• thoroughly
• all of the above

Answer:

• all of the above

Question 11: 69. When using a wet developer:

• a thick developer layer reveals fine cracks better.
• remove excess developer with compressed air
• a black developer shows better contrast than white.
• a thin developer layer reveals fine cracks better

Answer:

• a thin developer layer reveals fine cracks better

Question 12: 91. All of the following materials can be effectively tested with liquid penetrant

except:

• aluminum
• unglazed ceramics
• glass
• magnesium