Three-Phase Voltage and Current — Study Resources & PYQs
Basic concepts of three-phase voltage and current systems.
- Estimated study time: 30 minutes
Study resources
- Testbook - Star and Delta Connection (Article) — Explains star and delta 3-phase connections and the relationship between line and phase voltage/current with examples.
- NPTEL - Fundamentals of Electrical Engineering (3-Phase Circuits section) (Video) — IIT Kharagpur lectures explaining single-phase and three-phase (star & delta) circuit concepts.
- All About Circuits - Three-Phase Y and Delta Configurations (Article) — Derivation of the root-3 relationship between line and phase quantities for both connections, with numerical examples.
- GeeksforGeeks - Star and Delta Connection (Article) — Indian site. VL-VP and IL-IP relations for both connections with conversions and solved sums.
- Electrical4U - Source Transformation (Article) — Covers ideal vs practical sources and the step-by-step technique to convert a voltage source into an equivalent current source and vice-versa.
- Neso Academy - Introduction to Network Theory (Video) — Introduces the full Network Theory syllabus, including where dependent sources fit into circuit analysis.
- NPTEL — Fundamentals of Electrical Engineering, IIT Kharagpur (Article) — Current IIT Kharagpur NPTEL course covering DC/AC circuits, three-phase circuits, resonance, transformers and electrical machines.
Three-Phase Voltage and Current previous year questions
Taught in these subjects
- FUNDAMENTALS OF ELECTRICAL ENGINEERING — BEET21 · Government College of Engineering and Technology, Jammu
- PRINCIPLES OF ELECTRICAL ENGINEERING — BEET11 · Government College of Engineering and Technology, Jammu
- Fundamentals of Electrical Engineering — EET2201 · Government College of Engineering and Technology, Jammu
- Principles of Electrical Engineering — EET2101 · Government College of Engineering and Technology, Jammu