**ELECTRIC CIRCUITS**

**UNIT � I**Introduction to Electrical Circuits

Circuit Concept � R-L-C parameters � Voltage and Current sources � Independent and dependent sources-Source transformation � Voltage � Current relationship for passive elements ( the diff input signals, square , ramp, saw tooth, triangular )

**UNIT � II**

Kirchhoff�s laws � network reduction techniques � series, parallel, series parallel, star-to-delta or delta-to-star transformation. Nodal analysis, mesh analysis, super node and super mesh for D-C excitation.

**UNIT � III**Single Phase A.C Circuits

R.M.S and Average values and form factor for different periodic wave forms, Steady state analysis of R, L and C (in series, parallel and series parallel combinations) with sinusoidal excitation � Concept of Reactance, Impedance, Susceptance and Admittance � Phase and Phase difference � concept of power factor, Real and Reactive powers � J-notation, Complex and Polar forms of representation, Complex power

**UNIT � IV**Locus diagrams & Resonance

Locus diagrams � series R-L, R-C, R-L-C and parallel combination with variation of various parameters � Resonance � series, parallel circuits, concept of band width and Q factor.

**UNIT � V**Magnetic Circuits

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

**UNIT � VI ;**Network topology:

Definitions � Graph � Tree, Basic cutset and Basic Tieset matrices for planar networks � Loop and Nodal methods of analysis of Networks with independent voltage and current sources - Duality & Dual networks.

**UNIT � VII**Network theorems (with D.C)

Tellegen�s, Superposition, Reciprocity, Thevenin�s, Norton�s, Maximum Power Transfer, Millman�s and Compensation theorems for

**UNIT � VIII**Network theorems (with A.C)

Tellegen�s, Superposition, Reciprocity, Thevenin�s, Norton�s, Maximum Power Transfer, Millman�s and Compensation theorems for A.c. excitations.

**TEXT BOOKS:**

1. Engineering circuit analysis by William hayt and jack e kemmerly McGraw Hill ;

2. Circuits & networks by a.sudhakar and shyammohan s pillai TMH

3. Electric circuits by a chakravarthy dhanipat rai & sons

**REFERENCE BOOKS:**

1. Network analysis by m e an lakenberg

2. Linear circuit analysis (time domain phasor and

3. Network theory n c jagan & c lakshiminarayana 2006, BSP.

4. Electric circuit theory by k raeshwaran, PE 2004

5. Basic circuit analysis by d.r. Cunningham & j.a. stuller, jaico