Magnetic Particle Inspection Level 2 Practice Exam

The term that describes materials that are weakly attracted magnetically is "paramagnetic." Paramagnetic materials have unpaired electrons in their atomic structure, which causes them to be attracted to an external magnetic field. This attraction is relatively weak compared to ferromagnetic materials, which can retain magnetization and are strongly attracted to magnets. Paramagnetic behavior is typically observed in materials such as aluminum and certain metal oxides. The key characteristic of paramagnetic materials is their ability to align with an external magnetic field, even though they do not maintain magnetization once the field is removed. In contrast, diamagnetic materials, while they are also attracted to external magnetic fields, exhibit a very weak repulsion and do not have unpaired electrons. Ferromagnetic materials are strongly attracted to magnets and can retain their magnetization, and nonmagnetic materials show no magnetic properties at all. Understanding these distinctions is important in the field of magnetic particle inspection, as different materials will behave differently under magnetic exposure.