For direct contact magnetising methods, current should be flowing in what direction relative to expected discontinuities?

Related MCQs

• For direct contact magnetising methods, current should be flowing in what direction relative to expected discontinuities?
• For direct contact magnetising methods, the magnetic field is oriented in what direction relative to the current direction?
• For direct contact magnetising methods, the magnetic field is oriented in what direction relative to the current direction?
• When the orientation of likely discontinuities is unknown, what is the minimum number of magnetising operations required to perform an adequate test?
• Applying the theory of the ‘Right Hand Rule’, a longitudinal surface defect in a round bar is detected by ‘current passing in a direction parallel to the direction of expected defects’ because:
• 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?
• The formula, NI = 45000/(L/D), is used to calculate the proper magnetising current for:
• The formula, NI = 45000/(L/D), gives proper magnetising current for a coil, regardless of coil size as long as:
• The formula, NI = 45000/(L/D), is used to calculate the proper magnetising current for:
• The type of current that is best suited to detect surface discontinuities is: