MMET 402 - Exam 1: PT Practice Questions and Answers 100% Pass

MMET 402 - Exam 1: PT Practice Questions and Answers 100% Pass Which one of the following conditions will affect the rate and the extent a liquid penetrant will enter cracks, fissures and other small openings? a. the hardness of the specimen being tested b. the surface condition of the specimen being tested c. the color of the penetrant d. the conductivity of the specimen being tested - ANSWER-b Which of the following is a commonly used classification for penetrant? a. postemulsifiable penetrant b. nonferrous penetrant c. chemical etch penetrant d. nonaqueous penetrant - ANSWER-a Copyright ©EMILLYCHARLOTE 2025 ACADEMIC YEAR, ALL RIGHTS RESERVED. Page 2/12 A generally accepted method for removing excess nonwater washable penetrant is: a. repeatedly dipping the test specimen in a cleaner b. soaking the test specimen in hot detergent water c. blowing the excess penetrant off the surface of the part with compressed air d. wiping and cautiously cleaning the test specimen with a cleaner- dampened cloth - ANSWER-d All of the following parts can be tested by the liquid penetrant method except: a. an iron casting b. an aluminum forging c. a part made from a porous plastic material d. a part made from a nonporous material - ANSWER-c Which of the following discontinuities can be found by the penetrant test method? Copyright ©EMILLYCHARLOTE 2025 ACADEMIC YEAR, ALL RIGHTS RESERVED. Page 3/12 a. a surface crack b. a subsurface crack c. an internal inclusion d. none of the above - ANSWER-a Which of the following is generally the more acceptable method for cleaning parts prior to penetrant testing? a. sand blasting b. wire brushing c. grinding d. vapor degreasing - ANSWER-d The first step in conducting a liquid penetrant test on a surface that has been painted is to: a. carefully apply the penetrant over the surfac