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- Question 1 of 40
1. Question
The proper number of ampere-turns for a given test specimen is determined by:
CorrectIncorrect - Question 2 of 40
2. Question
A circular field may be induced into a specimen by:
CorrectIncorrect - Question 3 of 40
3. Question
In longitudinal magnetization, the proper term for calculating magnetizing force is:
CorrectIncorrect - Question 4 of 40
4. Question
Why is it preferable to disassemble parts before magnetic particle inspection?
CorrectIncorrect - Question 5 of 40
5. Question
Fluorescent magnetic particle indications should be inspected under:
CorrectIncorrect - Question 6 of 40
6. Question
Welded plate of 25 mm thickness with prods, what minimum current shall be required to satisfactory inspection with prod spacing of 150 mm?
CorrectIncorrect - Question 7 of 40
7. Question
What are the three causes of nonrelevant indications?
CorrectIncorrect - Question 8 of 40
8. Question
A defect open to the surface produces an indication that is:
CorrectIncorrect - Question 9 of 40
9. Question
What equipment is used to determine whether a part has been demagnetized?
CorrectIncorrect - Question 10 of 40
10. Question
Why should parts be cleaned after demagnetization?
CorrectIncorrect - Question 11 of 40
11. Question
The maximum spacing between prods for the best sensitivity is ________________________.
CorrectIncorrect - Question 12 of 40
12. Question
An article has been circularly magnetized and retains a circular residual field. To replace the circular field with a longitudinal field, we longitudinally magnetize the article with a field that is as great or greater than:
CorrectIncorrect - Question 13 of 40
13. Question
Whenever an article has been circularly magnetized, the first step in the demagnetization procedures is to establish:
CorrectIncorrect - Question 14 of 40
14. Question
When a round steel bar is magnetized by passing alternating current through its length, flux density is:
CorrectIncorrect - Question 15 of 40
15. Question
Surface seams in rolled bars are best detected in magnetic particle testing with:
CorrectIncorrect - Question 16 of 40
16. Question
A test object 10 inches (25cm) long and 2 inches (5 cm) in diameter , longitudinally magnetized in a 5-turn coil, requires a magnetizing current of: (NI = 45 000 / (L/D))
CorrectIncorrect - Question 17 of 40
17. Question
The only test method to use on articles made of soft steel with low retentivity is the ___________________ method.
CorrectIncorrect - Question 18 of 40
18. Question
When defects have been removed from an article, or have been repaired, the next step is to _________________________ the article.
CorrectIncorrect - Question 19 of 40
19. Question
When two pieces of steel rub against each other and either or both are in a magnetized condition, an indication is sometimes formed when magnetic particles are applied. This type of indications is called:
CorrectIncorrect - Question 20 of 40
20. Question
When magnetizing with the central conductor, how many amperes would be required to circularly magnetize a hollow tube with an outside diameter of 2 inches (5 cm)?
CorrectIncorrect - Question 21 of 40
21. Question
In longitudinal magnetization, the proper term for calculating magnetizing force is:
CorrectIncorrect - Question 22 of 40
22. Question
Subsurface discontinuity indications usually appear :
CorrectIncorrect - Question 23 of 40
23. Question
Which technique is the most sensitive?
CorrectIncorrect - Question 24 of 40
24. Question
When magnetizing a weld in two directions, if the current used in the first direction is 750 amps and the current in the second direction is 400 amps, which of the following is true?
CorrectIncorrect - Question 25 of 40
25. Question
A high velocity flow of wet method bath over surfaces of the specimen following removal of the magnetizing current may cause:
CorrectIncorrect - Question 26 of 40
26. Question
Whether using ac or dc, which type of magnetic particles provides the greatest sensitivity?
CorrectIncorrect - Question 27 of 40
27. Question
When using the wet continuous method, the flow of suspension from the hose should be shut off:
CorrectIncorrect - Question 28 of 40
28. Question
When a magnetic field is induced in a part with prods spaced 152 mm (6 in.) apart, the field is:
CorrectIncorrect - Question 29 of 40
29. Question
When using the wet particles in water suspension, wetting agents are added to:
CorrectIncorrect - Question 30 of 40
30. Question
The maximum spacing between prods for the best sensitivity is:
CorrectIncorrect - Question 31 of 40
31. Question
When a round steel bar is magnetized by passing alternating current through its length, flux density is:
CorrectIncorrect - Question 32 of 40
32. Question
A test object 10 inches (25 cm) long and 2 inches (5 cm) in diameter, longitudinally magnetized in a 5-turn coil, requires a magnetizing current of:
CorrectIncorrect - Question 33 of 40
33. Question
A surface defect produces an indication which is:
CorrectIncorrect - Question 34 of 40
34. Question
With the wet continuous method, the liquid bath is applied at which of the following times?
CorrectIncorrect - Question 35 of 40
35. Question
Nonrelevant indications are caused when magnetic particles are attracted to leakage fields that occur from:
CorrectIncorrect - Question 36 of 40
36. Question
When two pieces of steel rub against each other and either or both are in a magnetized condition, an indication is sometimes formed when magnetic particles are applied. This type of indication is called:
CorrectIncorrect - Question 37 of 40
37. Question
What are the three causes of nonrelevant indications?
CorrectIncorrect - Question 38 of 40
38. Question
What equipment is used to determine whether a part has been demagnetized?
CorrectIncorrect - Question 39 of 40
39. Question
When magnetizing with the central conductor, how many amperes would be required to circularly magnetize a hollow tube with an outside diameter of 2 inches (5 cm)?
CorrectIncorrect - Question 40 of 40
40. Question
Which of the following is the general procedure followed when demagnetizing an article??
CorrectIncorrect
