Electric Circuit Analysis

EE3251

ELECTRIC CIRCUIT ANALYSIS

OBJECTIVES:

• To introduce electric circuits and its analysis

• To provide key concepts to analyze and understand electrical circuits

• To impart knowledge on solving circuit equations using network theorems

• To educate on obtaining the transient response of circuits.

• To introduce the phenomenon of resonance in coupled circuits.

• To introduce Phasor diagrams and analysis of single &three phase circuits

UNIT I

BASIC CIRCUITS ANALYSIS

Fundamentals concepts of R, L and C elements-Energy Sources- Ohm's Law -Kirchhoff 's Laws - DC Circuits - Resistors in series and parallel circuits A.C Circuits - Average and RMS Value - Complex Impedance - Phasor diagram - Real and Reactive Power, Power Factor, Energy -Mesh current and node voltage methods of analysis D.C and A.C Circuits.

UNIT II

NETWORK REDUCTION AND THEOREMS FOR DC AND AC CIRCUITS

Network reduction: voltage and current division, source transformation star delta conversion. Theorems - Superposition, Thevenin's and Norton's Theorem - Maximum power transfer theorem - Reciprocity Theorem - Millman's theorem- Tellegen's Theorem-Statement, application to DC and AC Circuits.

UNIT III

TRANSIENT RESPONSE ANALYSIS

Introduction Laplace transforms and inverse Laplace transforms- standard test signals -Transient response of RL, RC and RLC circuits using Laplace transform for Source free, Step input and Sinusoidal input.

UNIT IV

RESONANCE AND COUPLED CIRCUITS

Series and parallel resonance-frequency response - Quality factor and Bandwidth - Self and mutual inductance Coefficient of coupling - Dot rule-Analysis of coupled circuits- Single Tuned circuits.

UNIT V

THREE PHASE CIRCUITS

Analysis of three phase 3-wire and 4-wire circuits with star and delta connected loads, balanced and unbalanced - phasor diagram of voltages and currents - power measurement in three phase circuits- Power Factor Calculations.

TOTAL: 60 PERIODS

OUTCOMES:

After completing this course, the students will be able to:

CO1: Explain circuit's behavior using circuit laws.

CO2: Apply mesh analysis/ nodal analysis / network theorems to determine behavior of the given DC and AC circuit

CO3: Compute the transient response of first order and second order systems to step and sinusoidal input

CO4: Compute power, line/ phase voltage and currents of the given three phase circuit

CO5: Explain the frequency response of series and parallel RLC circuits

CO6: Explain the behavior of magnetically coupled circuits.

TEXT BOOKS:

1. William H. HaytJr, Jack E. Kemmerly and Steven M. Durbin, "Engineering Circuits Analysis", McGraw Hill publishers, 9th edition, New Delhi, 2020.

2. Charles K. Alexander, Mathew N.O. Sadiku, "Fundamentals of Electric Circuits", Second Edition, McGraw Hill, 2019.

3. Allan H. Robbins, Wilhelm C. Miller, "Circuit Analysis Theory and Practice", Cengage Learning India, 2013.

REFERENCES

1. Chakrabarti A, "Circuits Theory (Analysis and synthesis), Dhanpat Rai& Sons, New Delhi, 2020.

2 Joseph A. Edminister, Mahmood Nahvi, "Electric circuits", Schaum's series, McGraw-Hill, First Edition, 2019.

3. M E Van Valkenburg, "Network Analysis", Prentice-Hall of India Pvt Ltd, New Delhi, 2015.

4. Richard C. Dorf and James A. Svoboda, "Introduction to Electric Circuits", 7th Edition, John Wiley Sons, Inc. 2018.

5. Sudhakar A and Shyam Mohan SP, "Circuits and Networks Analysis and Synthesis", McGraHill, 2015.