#### EE8251 – CIRCUIT THEORY Regulation 2017

#### UNIT I BASIC CIRCUITS ANALYSIS

Resistive elements – Ohm’s Law Resistors in series and parallel circuits – Kirchoffs laws – Mesh current and node voltage – methods of analysis.

#### UNIT II NETWORK REDUCTION AND THEOREMS FOR DC AND AC IRCUITS

Network reduction: voltage and current division, source transformation – star delta conversion. Thevenins and Norton Theorems – Superposition Theorem – Maximum power transfer theorem –

Reciprocity Theorem – Millman’s theorem.

#### UNIT III TRANSIENT RESPONSE ANALYSIS

L and C elements -Transient response of RL, RC and RLC Circuits using Laplace transform for DC input and A.C. sinusoidal input.

#### UNIT IV THREE PHASE CIRCUITS

A.C. circuits – Average and RMS value – Phasor Diagram – Power, Power Factor and Energy.- Analysis of three phase 3-wire and 4-wire circuits with star and delta connected loads, balanced & un balanced – phasor diagram of voltages and currents – power measurement in

three phase circuits.

#### UNIT V RESONANCE AND COUPLED CIRCUITS

Series and parallel resonance – their frequency response – Quality factor and Bandwidth – Self and mutual inductance – Coefficient of coupling – Tuned circuits – Single tuned circuits.

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### Course Curriculum

UNIT I BASIC CIRCUITS ANALYSIS | |||

EE8251- unit 1 -Introduction, basic terms & definition, classification of network, circuit element, energy source | FREE | 00:00:00 | |

EE8251- unit 1 -Resistor ,inductor & capacitor in series & parallel | FREE | 00:00:00 | |

EE8251- unit 1 -Kirchoff’s law & problems | FREE | 00:00:00 | |

EE8251- unit 1 -Mesh analysis & problems , Node analysis & problems | 00:00:00 | ||

EE8251- unit 1 -Basic circuit analysis – AC circuit ,basic definition, phasor representation of an alternative quantity | 00:30:00 | ||

EE8251- unit 1 -Analysis of AC circuit, AC through pure inductive CKT problems | 00:30:00 | ||

EE8251- unit 1 -AC through pure capacitive ckt, series RL circuit | 00:30:00 | ||

EE8251- unit 1 -RL series problems, AC through series RC circuit, problems | 00:00:00 | ||

EE8251- unit 1 -AC through series RLC circuit, problems | 00:30:00 | ||

EE8251- unit 1 -AC through parallel circuit ,problems | 00:30:00 | ||

EE8251- unit 1 -Rectangular to polar conversions & polar to rectangular conversions | 00:00:00 | ||

EE8251- unit 1 -Nodal analysis | 00:00:00 | ||

UNIT II NETWORK REDUCTION AND THEOREMS FOR DC AND AC CIRCUITS | |||

EE8251- unit 2 -Network reduction voltage & current , problems | 00:00:00 | ||

EE8251- unit 2 -Superposition theorem DC circuit, problems | 00:00:00 | ||

EE8251- unit 2 -Superposition theorem AC circuit problems | 00:00:00 | ||

EE8251- unit 2 -Thevenin’s theorem (DC), proof, problems | 00:00:00 | ||

EE8251- unit 2 -Thevenin theorem AC circuit problem | 00:00:00 | ||

EE8251- unit 2 -Norton theorem DC circuit, proof, problems | 00:00:00 | ||

EE8251- unit 2 -Maximum power transfer theorem DC , problem | 00:00:00 | ||

EE8251- unit 2 -Maximum power transfer theorem AC circuit | 00:00:00 | ||

EE8251- unit 2 -Reciprocity theorem DC circuit, proof, verifying | 00:00:00 | ||

EE8251- unit 2 -Reciprocity theorem AC circuit | 00:00:00 | ||

UNIT III TRANSIENT RESPONSE ANALYSIS | |||

EE8251- unit 3 -Transient response introduction | 00:00:00 | ||

EE8251- unit 3 -Transient response of RL & RC series circuit with DC input & problems | 00:00:00 | ||

EE8251- unit 3 -Transient response of RLC series circuit with DC input | 00:00:00 | ||

EE8251- unit 3 -RL decaying transient , DC response of RC series decaying transient , problems | 00:00:00 | ||

EE8251- unit 3 -RL & RC series circuit excited by AC source , problems | 00:00:00 | ||

EE8251- unit 3 -RLC series circuit excited by sinusoidal source | 00:00:00 | ||

EE8251- unit 3 -Two port network introduction, terms & definition, types & parameter | 00:00:00 | ||

EE8251- unit 3 -Condition of symmetry for z parameter, problems | 00:30:00 | ||

EE8251- unit 3 -Y parameter (or) short circuit admittance parameter, Condition of symmetry for y parameters | 00:00:00 | ||

EE8251- unit 3 -π section Representation of a two port network, problems | 00:00:00 | ||

EE8251- unit 3 -Y parameter (or) short circuit admittance parameter, Condition of symmetry for y parameters | 00:00:00 | ||

EE8251- unit 3 -Summary of two port network, inter relationship between parameters | 00:00:00 | ||

EE8251- unit 3 -y & H parameters in terms of other parameters, conversion table for 3 different types of two port network | 00:00:00 | ||

UNIT IV THREE PHASE CIRCUITS | |||

EE8251- unit 4 -Introduction & generation of 3 phase voltage | 00:00:00 | ||

EE8251- unit 4 -Analysis of 3 phase 3 wire & 4 wire, relation between load current & phase current, expression for total power in a 3 phase balanced circuit | 00:30:00 | ||

EE8251- unit 4 -3 phase problems | 00:30:00 | ||

EE8251- unit 4 -unbalanced star connect , 3 phase 3 wire star connected , problems | 00:00:00 | ||

EE8251- unit 4 -unbalanced delta connected load , problems | 00:00:00 | ||

EE8251- unit 4 -3 phase power measurement two watt meter method | 00:30:00 | ||

EE8251- unit 4 -Determination of power factor from wattmeter reading, problems | 00:30:00 | ||

UNIT V RESONANCE AND COUPLED CIRCUITS | |||

EE8251- unit 5 -Series resonance, frequency, Phasor diagram, representation ,reaction curve, Half power frequency, Bandwidth, Quality factor | 00:00:00 | ||

EE8251- unit 5 -Parallel Resonance cases | 00:00:00 | ||

EE8251- unit 5 -Series & parallel resonance problems | 00:00:00 | ||

EE8251- unit 5 -Half power frequencies for parallel resonance circuit, bandwidth quality factor, coupled circuit , Mutual inductance, coeffecient of coupling | 00:00:00 | ||

EE8251- unit 5 -Self inductance & Mutual inductance problems, Dot representation of coupled circuit problems | 00:00:00 | ||

EE8251- unit 5 -Analysis of coupled circuit, problems, tuned circuit single coupled circuits | 00:30:00 |

**1921 STUDENTS ENROLLED**