If a crack exists in a circular magnet, the attraction of magnetic particles to the crack is caused by:

Related MCQs

• A magnetic particle testing technique in which the test piece is magnetised and magnetic particles applied after the magnetising force has been removed is called the:
• How is the magnetic field strength at the surface of a magnetic conductor having permeability, µ, related to the magnetic field strength, F, at the surface of a nonmagnetic conductor carrying the same current?
• Magnetic lines of force enter and leave a magnet at:
• When a magnetic field cuts across a crack:
• Magnetic particles testing is most likely to find subsurface discontinuities in:
• Which of the following is not an advantage of magnetic particles testing?
• Which of the following describes the shape of particles used for dry magnetic particle testing?
• A disadvantage of fluorescent magnetic particles is:
• Which of the following describes the best technique for applying dry magnetic particles to a test piece?
• Why are magnetic particles available in different colours?