Subject Code & Name: EE25302 – Electric Circuit Analysis
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.E. Electrical and Electronics Engineering (EEE)
Credits / L-T-P: 3 Credits | L-T-P: 3-0-0
Course Objectives
- To Apply the basic circuit solving techniques for both AC and DC circuits.
- To know the applications of various network theorems, transient analysis. Resonance, two port networks and Three phase circuits.
Full Unit-wise Syllabus
Unit I – Introduction to DC And AC Circuits
Types of sources, Review of Mesh and Nodal Analysis. Mesh and Nodal analysis with dependent sources applied to DC and AC Circuits- Super mesh and Super node analysis applied to DC and AC Circuits. Locus Diagrams.
Unit II – Phasors and AC Steady State Analysis
Concept of phasors, phasor relationships for R, L and C, Concept of impedance and admittance, sinusoidal steady state analysis using phasors, phasor diagrams.
Unit III – Network Reduction Techniques
Review of Series parallel circuits; star and delta transformation.
Unit IV – Network Theorems
Superposition, Reciprocity, Compensation, Thevenin’s, Norton’s and Maximum Power Transfer Theorems; Analysis with dependent and independent sources- Application to DC and AC networks.
Unit V – Solution of First and Second Order Networks
Solution of first and second order differential equations for Series and Parallel R-L, R- C, R-L-C circuits, initial and final conditions in network elements, forced and free response, time constants, steady state and transient state response. Application of Laplace transforms and inverse Laplace transforms for electrical circuits.
Unit VI – Resonance and Two Port Networks
Resonant circuits-series, parallel, series-parallel circuits-effect of variation of Q on resonance. Relations between circuit parameters- Q, resonant frequency and bandwidth. Two Port Networks, terminal pairs, relationship of two port variables, impedance parameters, admittance parameters, transmission parameters and hybrid parameters, interconnections of two port networks
Unit VII – Three Phase Circuits
Three phase balanced / unbalanced circuits, phase sequence – analysis of three phase 3-wire and 4-wire circuits with star and delta connected loads, balanced & un balanced loads – phasor diagram of voltages and currents – power and power factor measurements in three phase circuits. T1: Simulation of circuits with Krichoff’s law validation T2: Simulation of network theorems T3: Simulation of circuit transients T4: Simulation of Resonance & Three phase circuits
Course Outcomes (COs)
- CO1: Apply basic circuit analysis techniques to solve DC and AC circuits using mesh and nodal methods.
- CO2: Analyze electrical networks using network theorems and reduction techniques.
- CO3: Evaluate transient and steady state responses of first and second order circuits using differential equations and Laplace transforms.
- CO4: Analyze resonance phenomena and two port network parameters in electrical circuits.
- CO5: Analyze balanced and unbalanced three phase circuits and apply concepts to practical power systems.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 50% | End Semester Examinations 50%
- Internal methodology: Quiz (5%), Project (15%), Assignment Programs (25%), Practical (25%), Internal Examinations (30%)
Source: Official Anna University – B.E. Electrical and Electronics Engineering R-2025 Curriculum
Last Updated: September 2026
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