Three-Phase System Basics – Star and Delta | Basic Electrical Engineering | L45

👉 Previous Lecture (L44): Parallel Resonance in RLC Circuit https://youtu.be/2HAutoh414E 👉 Next Lecture (L46): Balanced Three-Phase Circuits In this lecture (L45), the fundamentals of THREE-PHASE SYSTEMS are introduced with a focus on STAR and DELTA connections. The lecture explains why three-phase systems are preferred over single-phase systems and develops the relationships between line and phase quantities in both configurations. Special emphasis is given to understanding how voltages and currents are distributed in star (Y) and delta (Δ) systems. 📌 Topics covered in this lecture: • Introduction to three-phase systems • Advantages over single-phase supply • Star (Y) connection • Delta (Δ) connection • Line and phase voltage relationship • Line and phase current relationship • Comparison between Y and Δ systems • One solved numerical example 🎓 This lecture is useful for: • B.Tech / B.E. first-year students • NEP-based Basic Electrical Engineering courses • Understanding three-phase fundamentals • Preparation for power system analysis • Exam-oriented concept clarity 📚 Playlist: Basic Electrical Engineering – Complete Course #BasicElectricalEngineering #ThreePhase #StarDelta #ElectricalEngineering #BEE #NEP2020