Complete Electrical Machines course for B.Tech EEE and GATE in 80+ video lectures: magnetic circuits, DC machines, single-phase and three-phase transformers, induction motors, alternators and synchronous motors. Watch in order: each lecture builds on the previous one. Modules: 1. Magnetic Circuits & Electromagnetic Induction (Lectures 1A-1R) 2. DC Machines: construction, windings, EMF equation, armature reaction, losses (2A-2J) 3. DC Motors: torque, characteristics, speed control (3A-3C) 4. Single-Phase Transformers: EMF equation, equivalent circuit, OC/SC tests, regulation, efficiency (4A-4H) 5. Three-Phase Transformers: winding connections, vector groups, Scott connection (5A-5D) 6. Three-Phase Induction Motors: rotating magnetic field, torque-slip, equivalent circuit, starting (6A-6K) 8. Alternators (Synchronous Generators): EMF equation, armature reaction, voltage regulation, two-reaction theory (8A-8J) 9. Synchronous Motors: starting, effect of excitation, synchronous condenser, applications (9A-9J) 10. Single-Phase Induction Motors: double revolving field, types, equivalent circuit (10A-10E) Solved problems for every module (Electrical Machines Tutorials): https://www.youtube.com/playlist?list=PL5TKV1tzb09kPh9xyaU8yZC4ph305bTty Notes & more: https://engineeringdevotion.com #ElectricalMachines #ElectricalEngineering #GATEEE
Curated by: Engineering Devotion (81 videos)
AC Excitation in Magnetic Circuits : AC excitation in magnetic circuits refers to the use of alternating current (AC) to energize a coil wound around a ferromagnetic core. This AC current creates a time-varying magnetic flux within the core. Unlike DC excitation, which produces a static magnetic field, AC excitation leads to dynamic behavior, enabling essential functions in many electrical devices. This alternating flux is crucial for inducing electromotive force (EMF) and facilitating energy transfer, especially in applications like transformers, inductors, motors, and generators. Understanding AC excitation is vital for analyzing core losses (hysteresis and eddy currents) and designing efficient magnetic devices. Important Search Queries: what is AC excitation AC excitation magnetic circuits explained how AC excitation works applications of AC excitation in transformers AC excitation in inductors magnetic flux with AC excitation core losses due to AC excitation hysteresis in magnetic circuits AC excitation eddy currents in magnetic core AC AC magnetic field generation designing coils for AC excitation magnetic permeability under AC conditions magnetic circuit analysis AC current difference between AC and DC excitation #ACExcitation #MagneticCircuits #Electromagnetism #Transformers #Inductors #ElectricalMachines #MagneticFlux #CoreLosses #Hysteresis #EddyCurrents #ElectromagneticDesign #PowerElectronics --- Electrical Machines full course (lectures): https://www.youtube.com/playlist?list=PL5TKV1tzb09lbVthPhckKZ7JsnwHkWmFP Electrical Machines solved problems (tutorials): https://www.youtube.com/playlist?list=PL5TKV1tzb09kPh9xyaU8yZC4ph305bTty Notes & more: https://engineeringdevotion.com