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)
Lenz's Law and Right-Hand Thumb Rule: Understanding Induced Current & Magnetic Fields Lenz's Law states that the direction of an induced current (or electromotive force, EMF) in a conductor is always such that it opposes the change in magnetic flux that created it. Simply put, nature resists changes in magnetic fields. This fundamental principle ensures the conservation of energy in electromagnetic induction. The Right-Hand Thumb Rule is a simple mnemonic used to determine the direction of the magnetic field produced by a current-carrying wire or the direction of induced current/force. For a straight current-carrying conductor: If you point your right thumb in the direction of the current, your curled fingers will indicate the direction of the concentric magnetic field lines around the wire. For a coil/solenoid: If your fingers curl in the direction of the current flow, your thumb points towards the North Pole of the induced magnetic field. These two concepts are crucial for understanding how generators, transformers, and other electromagnetic devices function. Important Search Queries: What is Lenz's Law? Right Hand Thumb Rule explanation How to apply Lenz's Law Direction of induced current Magnetic field direction around a wire Faraday's Law and Lenz's Law Electromagnetic induction principles Lenz's Law examples Right Hand Thumb Rule applications Physics of induced EMF #LenzsLaw #RightHandThumbRule #ElectromagneticInduction #Physics #Magnetism #InducedCurrent #FaradaysLaw #EMF #ScienceExplained #ElectricalEngineering --- 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