Electrical Circuits – I (EEE 1-2)

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(15A02201) ELECTRICAL CIRCUITS - I

Objectives:
To make the student learn about
  • Basic characteristics of R,L,C parameters
  • The concepts of real power, reactive power, complex power, phase angle and phase difference
  • How to compute two port network parameters
  • Network reduction techniques, star to delta and delta to star transformations
  • Series and parallel resonances, bandwidth, current locus diagrams
  • Network theorems and their applications

UNIT- I INTRODUCTION TO ELECTRICAL & MAGNETIC CIRCUITS
Electrical Circuits: Circuit Concept, R, L and C Parameters - Independent and Dependent Voltage and Current Sources -Source Transformation,Voltage - Current Relationship for Passive Elements (For Different Input Signals: Square, Ramp, Saw Tooth, Triangular. Kirchhoff’s Laws, Network Reduction Techniques: Series, Parallel, Series Parallel, Star-to-Delta or Delta-to-Star Transformation Examples 
Magnetic Circuits: Faraday’s Laws of Electromagnetic Induction, Concept of Self and Mutual Inductance, Dot Convention, Coefficient of Coupling, Composite Magnetic Circuit-Analysis of Series and Parallel Magnetic Circuits, MMF Calculations.

UNIT- II SINGLE PHASE A.C CIRCUITS
R.M.S, Average Values and Form Factor for Different Periodic Wave Forms:Sinusoidal Alternating Quantities. Phase and Phase Difference, Complex and Polar Forms Of Representations, j-Notation, Steady State Analysis of R,L and C (In Series, Parallel and Series Parallel Combinations) With Sinusoidal Excitation, Concept of Power Factor, Concept of Reactance, Impedance, Susceptance and Admittance-Real and Reactive Power and Complex Power. Examples.

UNIT- III LOCUS DIAGRAMS & RESONANCE
Series R-L, R-C, R-L-C and Parallel Combination with Variation of Parameters. Resonance: Series, Parallel Circuits, Concept of Bandwidth and Q Factor.

UNIT- IV NETWORK THEOREMS
Thevenin’s, Norton’s, Maximum Power Transfer, Millman’s Theorems, Tellegen’s, Superposition, Reciprocity and Compensation Theorems for D.C And Sinusoidal Excitations.

UNIT- V TWO PORT NETWORKS
Two Port Network Parameters: Impedance, Admittance, Transmission and Hybrid Parameters and their Relations. Concept of Transformed Network,Two Port Network Parameters Using Transformed Variables.

Study Material's For Electrical Circuits-I
Text Book For Electrical Circuits-I by Jhon Bird : Download
Lecture Notes For Electrical Circuits(all units): Download

Unit-I:
Introduction to Electrical circuits: Download
Magnetic Circuits: Download
RLC Circuits: Download

Unit-II:
Single Phase A.C Circuits: Download

Unit-III:
Locus diagrams & Resonance: Refer lecture notes

Unit-IV:
Network Thereoms: Download

Unit-V:
Two Port Networks: Download



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