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MFL Exam
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  1. Question 1 of 30
    1. Question

    Magnetic flux leakage testing (MFL) will most easily detect changes in the following materials:

    Correct
    Incorrect
  2. Question 2 of 30
    2. Question

    In NDT, the term “method” refers to:

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    Incorrect
  3. Question 3 of 30
    3. Question

    Which of the following is strictly considered a “surface” method?

    Correct
    Incorrect
  4. Question 4 of 30
    4. Question

    A unit of magnetic flux density is the:

    Correct
    Incorrect
  5. Question 5 of 30
    5. Question

    Magnetic flux leakage is most reluctant to travel in:

    Correct
    Incorrect
  6. Question 6 of 30
    6. Question

    MFL search coils detect a change in the material
    because:

    Correct
    Incorrect
  7. Question 7 of 30
    7. Question

    Hall effect sensors are:

    Correct
    Incorrect
  8. Question 8 of 30
    8. Question

    A document that provides recommendations for the qualification and certification of NDT test personnel is

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    Incorrect
  9. Question 9 of 30
    9. Question

    Which of the following is a flux-sensing device that is dependent on some sort of time variation of field intensity?

    Correct
    Incorrect
  10. Question 10 of 30
    10. Question

    Which of the following is a diamagnetic material?

    Correct
    Incorrect
  11. Question 11 of 30
    11. Question

    The distance of a sensing coil from a test surface is
    called the:

    Correct
    Incorrect
  12. Question 12 of 30
    12. Question

    Flux leakage changes can be detected with which of the following coils?

    Correct
    Incorrect
  13. Question 13 of 30
    13. Question

    A magnetic alternating current (AC) bridge is usually made of what type of material?

    Correct
    Incorrect
  14. Question 14 of 30
    14. Question

    As material thickness increases, the flux density decreases. This will also decrease the:

    Correct
    Incorrect
  15. Question 15 of 30
    15. Question

    While performing a magnetic flux leakage test utilizing a search coil, an increase in the flux leakage will result in what in the coil?

    Correct
    Incorrect
  16. Question 16 of 30
    16. Question

    With a hall effect sensor, the output is proportional to the:

    Correct
    Incorrect
  17. Question 17 of 30
    17. Question

    Ferrites are used with pickup coils to:

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    Incorrect
  18. Question 18 of 30
    18. Question

    The MFL method is applicable to:

    Correct
    Incorrect
  19. Question 19 of 30
    19. Question

    To detect gradual wall loss, which of the following detectors must be used?

    Correct
    Incorrect
  20. Question 20 of 30
    20. Question

    Which one of the following materials is not used as a permanent magnet?

    Correct
    Incorrect
  21. Question 21 of 30
    21. Question

    What type of test is MFL?

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    Incorrect
  22. Question 22 of 30
    22. Question

    Which system should be used for inspecting petroleum and gas pipelines?

    Correct
    Incorrect
  23. Question 23 of 30
    23. Question

    Which type of magnet is normally used in smart pigs?

    Correct
    Incorrect
  24. Question 24 of 30
    24. Question

    Which of the following materials may be used for the conductor in Figure 1?

    Correct
    Incorrect
  25. Question 25 of 30
    25. Question

    How do the lines of force outside of a magnet travel?

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    Incorrect
  26. Question 26 of 30
    26. Question

    In a magnetizing coil, the strength of the magnetic field is dependent upon:

    Correct
    Incorrect
  27. Question 27 of 30
    27. Question

    The magnetic properties and hysteresis loops are affected by:

    Correct
    Incorrect
  28. Question 28 of 30
    28. Question

    Which of the following flux leakage sensing elements is equivalent to a flux gate magnetometer?

    Correct
    Incorrect
  29. Question 29 of 30
    29. Question

    What kind of sensor is a solid-state device, the resistance of which changes with magnetic field intensity?

    Correct
    Incorrect
  30. Question 30 of 30
    30. Question

    To detect perturbations in a static magnetic field, which kind of sensors must have relative motion between the sensor and the field (such that flux within the sensor changes)?

    Correct
    Incorrect
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