FREE ENGINEERING AND STUDY GAMES ABOUT MAG

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FREE ENGINEERING AND STUDY GAMES ABOUT MAG

PARTICLE LVL1 EXAM QUESTIONS

Qs and Ans Expert- Explanation

This Exam contains:

-Guarantee passing score -85 Questions and Answers -format set of multiple-choice -Expert- Explanation Question 1: 11. Magnetic flux lines which are parallel to a discontinuity produce:

• strong indications
• weak indications
• no indications
• fuzzy indications

Answer:

• no indications

Question 2: 69. Which form of magnetization is easiest to control in most parts?

• longitudinal magnetization
• permanent magnetism
• circular magnetization
• parallel magnetization

Answer:

• circular magnetization

Question 3: 41. When there is absolutely no pattern or distribution of magnetic particles, the

possible cause is that:

• the material is nonmagnetic
• the amperage setting is too low
• no current is being applied
• any of the above could be true

Answer:

• any of the above could be true

Question 4: 23. Advantage of MT testing over penetrant testing?

• it can detect surface discontinuities with foreign material embedded in them
• it is faster on individual parts
• it can detect near-surface discontinuities
• all of the above

Answer:

• all of the above

Question 5: 24. The amount of amperage used for magnetic particle inspection using the prod

method is determined from the:

• type of material
• distance between the prods
• diameter of the part
• total length of the part

Answer:

• distance between the prods

Question 6: 39. What method provides greater sensitivity, particularly in locating subsurface discontinuities?

• continuous
• residual
• circular
• longitudinal

Answer:

• continuous

Question 7: 45. Which type of current has a "skin effect"?

• AC
• DC
• half-wave rectified
• full-wave rectified

Answer:

• AC

Question 8: 43. Do not allow residual MT parts laid on a rack b/4 applying of MT particles to rub or touch because?

• there is a possible loss of the magnetic field
• it may cause magnetic writing
• it may damage the part
• it makes parts hard to handle

Answer:

• it may cause magnetic writing

Question 9: 67. With coil current flowing from + to -, a longitudinal field is created. Which of the following may be used to establish the direction of the magnetic field?

• the left hand rule
• the right hand rule
• Ohm's law
• there is no relevant law

Answer:

• the right hand rule

Question 10: 54. To detect lengthwise defects on the inside diameter of a hollow part, you

should:

• pass current through it
• magnetize it with a coil
• pass current through a central conductor
• increase the amperage used

Answer:

• pass current through a central conductor

Question 11: 79. When preparing an inspection bath, the amount of magnetic particles per

gallon of fluid is called its:

• measuring scale
• particle number
• strength or concentration
• usable limits

Answer:

• strength or concentration