Subject Code & Name: BM25C03 – Electric Circuit Analysis
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.E. Biomedical Engineering (BME) / B.E. Medical Electronics (MedElec)
Credits / L-T-P: 4 Credits | L-T-P: 2-1-2
Course Objectives
- To introduce the basic concepts of DC and AC circuits behavior and to study the transient and steady state response of the circuits subjected to step and sinusoidal excitations and different methods of circuit analysis using Network theorems, duality and topology.
Full Unit-wise Syllabus
Unit I – DC Circuit Analysis
Basic Components of electric Circuits, Charge, current, Voltage and Power, Voltage and Current Sources, Ohms Law, Kirchhoff’s Current Law, Kirchhoff’s voltage law, the single Node – Pair Circuit, series and Parallel Connected Independent Sources, Resistors in Series and Parallel, voltage and current division, Nodal analysis & Mesh analysis using Independent and Dependent Sources. Super Mesh, Super Node.
Practical: Verification of Mesh Analysis for DC Circuits. Verification of Nodal Analysis for DC Circuits.
Unit II – Network Theorem
Useful Circuit Analysis techniques using Independent and Dependent Sources - Linearity and superposition, Reciprocity Theorem, Thevenin and Norton Equivalent Circuits, Maximum Power Transfer, Delta-Wye Conversion. Duality: Duals, Dual circuits.
Practical: Verification of Thevenin, Norton & Super Position Theorems for DC Circuits. Verification of Maximum Power Transfer & Reciprocity Theorems for DC Circuits
Unit III – Sinusoidal Steady State Analysis
State analysis, Characteristics of Sinusoids, The Complex Forcing Function, The Phasor, Phasor relationship for R, L, and C, impedance and Admittance, Nodal and Mesh Analysis, Phasor Diagrams, AC Circuit Power Analysis, Instantaneous Power, Average Power, apparent Power and Power Factor, Complex Power.
Practical: Verify mesh and nodal analysis for AC circuits.
Unit IV – Transients And Resonance in RLC Circuits
Basic RL and RC Circuits, The Source- Free RL Circuit, The Source-Free RC Circuit, The Unit- Step Function, Driven RL Circuits, Driven RC Circuits, RLC Circuits, Frequency Response, Parallel Resonance, Series Resonance, Quality Factor.
Practical: Determination of Resonant Frequency of Series & Parallel RLC Circuits. Study of DC transients in RL, RC and RLC circuits
Unit V – Coupled Circuits
Magnetically Coupled Circuits, mutual Inductance, the Linear Transformer, the Ideal Transformer.
Unit VI – Topology
An introduction to Network Topology, Trees and General Nodal analysis, Links and Loop analysis.
Activities: Simulate the DC and AC circuits using simulation tools Determine phasor relationship, real power (P), reactive power (Q), apparent power (S) and power factor in AC circuits using EDA tools
Course Outcomes (COs)
- CO1: Explain and apply fundamental electrical laws (Ohm’s Law, KCL, KVL) to analyse DC circuits.
- CO2: Analyze electrical networks using nodal, mesh analysis and network theorems.
- CO3: Evaluate steady state behavior of AC circuits using phasors and power concepts.
- CO4: Analyze transient response of RL, RC, and RLC circuits under different excitations.
- CO5: Simulate and analyse AC, DC circuit for any applications.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Solving of GATE questions (30%), Software activity (30%), Internal Examinations (40%)
Source: Official Anna University – B.E. Biomedical Engineering R-2025 Curriculum
Last Updated: September 2026
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