1.

The retentivity of a material describes:

2.

Where possible, circular magnetization is preferable to longitudinal magnetization because:

3.

The residual method is applicable to:

4.

Which of the following may cause magnetic particle test indications?

5.

Which of the following is a disadvantage of the dry method?

6.

Which statement is true when related to magnetic lines of force?

7.

An electric current through a copper wire:

8.

Which form of magnetization is easiest to control in most parts?

9.

The highest sensitivity to fine surface cracks would be obtained by which of the following techniques?

10.

The unit usually used to denote flux density is the:

11.

Paramagnetic materials:

12.

Ferromagnetic material is:

13.

The space within and surrounding a magnetized part of a conductor carrying a current is known as:

14.

What type of magnetization uses the formula: (1

15.

A lamination in steel plate would be classified as what type of discontinuity?

16.

Which brings out surface indications most clearly?

17.

The retentivity of a material describes:

18.

To detect lengthwise defects on the inside diameter of hollow parts, you should:

19.

The type of discontinuity potentially most harmful to the useful life of a part is:

20.

Which of the following is an advantage of the dry method?

21.

An internal rupture caused by working steel at improper temperatures is called a:

22.

A discontinuity that is produced during solidification of the molten metal is called:

23.

Which technique is the most sensitive?

24.

With current flowing from + to – in a coil, a longitudinal field is created. Which of the following may be used to establish the direction of the magnetic field?

25.

Which residual field is most difficult to demagnetize?

26.

Which of the following does not represent a limitation of magnetic particle testing?

27.

Which of the following is NOT a liquid vehicle in which particles are suspended in magnetic particle testing:

28.

The type of current that is best suited to detect surface discontinuities is:

29.

The magnetism which remains in a piece of magnetizable material after the magnetizing force has been removed is called the:

30.

Magnetic lines of force:

31.

Which of the following is not an advantage of magnetic particles testing?

32.

Subjecting the part to a magnetic field that is constantly reversing in polarity and gradually diminishing in strength accomplishes one of the following:

33.

The field in a section of pipe being magnetized by means of a central conductor is stronger at:

34.

A metal that is difficult to magnetize is said to have:

35.

Loss of fine particle sizes due to re-use of dry particles would probably lead to:

36.

Cracks that are caused by a combination of tensile stress and corrosion are called:

37.

When a magnetic field is induced in a part with prods spaced 150mm apart, the field is:

38.

The point at which the magnetism in a material cannot be increased even though the magnetizing force continues to increase is known as the:

39.

The most effective NDT method for locating surface cracks in ferromagnetic materials is:

40.

Magnetic particles testing is most likely to find subsurface discontinuities in:

41.

A residual field is always less than a continuous field because?

42.

Which of the following is most often used for dry magnetic particle inspection:

43.

A seam would be classified as what type of discontinuity?

44.

Which of the following is an advantage of the wet method?

45.

The magnetic field is the strongest when:

46.

Magnetic particle test indications which are due to cold work can best be removed by:

47.

A longitudinal surface crack in a circularly magnetized part will cause:

48.

The pipe would be classified as what type of discontinuity?

49.

The type of method most frequently used with mobile equipment is the:

50.

The strength of a magnetic field within a coil is determined by:

51.

The magnetic field is strongest when:

52.

Which of the following might cause nonrelevant indications?

53.

The most common cause of non-relevant indications in MT is:

54.

Which of the following is a disadvantage of the wet method?

55.

Retentivity:

56.

When a ferromagnetic material is in an unmagnetized state, the domains are:

57.

A continuous linear indication along the edge of a new fillet weld would most likely be a:

58.

Which of the following can be magnetized?

59.

The areas on a magnetised part from which the magnetic field is leaving or returning into the part are called:

60.

The primary reason for using water rather than oil as a suspension medium for wet method baths is that: