Which residual field is most difficult to demagnetise?

Related MCQs

• A residual field is always less than a continuous field because?
• The reverse magnetising force necessary to remove a residual magnetic field from a test piece after it has been magnetically saturated is called:
• A residual circular field may be objectionable because:
• Which of the following characteristics would be most important in a test piece which is to be tested using the residual method?
• Which of the following welding discontinuities would be most difficult to image radiographically:
• Which of the following welding discontinuities would be most difficult to image radiographically:
• The residual method is applicable to:
• According to AST M E709-95 and API, after removing magnetization of parts after examination, the residual magnetism shall not exceed (1 gauss = 0.0001 tesla):
• 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?
• 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?