Electrical Machines | Lecture - 1M | Magnetic Circuits | AC Excitation in Magnetic Circuits

[@lakshmipriyanka4490]

Thank you so much sir

[@mnada72]

"The magnetic circuits are never excited by DC supply", is this always true? I thought there is no emf induced by there is flux by DC supply Also L depends on physical properties of the inductor but the behavior of the inductor depends on the type of the supply I find this part of the slide confusing

[@EngineeringDevotion]

The magnetic circuits can be excited by a DC supply, but the nature of the excitation is different from that with an AC supply. With a DC supply, the magnetic flux is constant (once the transient period is over), while with an AC supply, the magnetic flux continuously changes. Your understanding is correct that while no EMF is induced in a steady-state DC condition, there is still a magnetic flux produced. Additionally, the inductance is a physical property of the inductor, but its behavior does indeed depend on whether the supply is DC or AC.

[@harshitxaxa7083]

Sorry but your are just reading the slides. Please try to explain properly