5

Electromagnetism and Magnetic Circuits

TOPICS DISCUSSED

  • Magnetic fields

  • Types of magnets

  • Concept of magnetization

  • Magnetization curve

  • Magnetic saturation

  • Hysteresis loss and Eddy current loss

  • Series and parallel magnetic circuits

  • Analogy of magnetic and electric circuits

  • Magnetic leakage and fringing

  • Lifting power of an electromagnet

5.1 Magnets and Magnetic Fields

Magnetism plays an important role in the field of electrical engineering. Construction of almost all electrical gadgets, equipment, and machines are done using the properties of magnetism, like in transformers, electrical rotating machines, i.e., generators and motors, relays, cutouts, electrical bells, etc.

The word “magnetism” originated from the city of Magnesia (now called ...

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