Nt Course File 2012-2013

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  -----------------------------------------------------------------------------------Network Thoery NETWORK THEORY Objective: The overall objective of teaching this semester course on Network Theory is to giventhe Under Graduate Engineer a through good knowledge of electrical engineeringthrough Network Theory circuits for second year second semester EEE Students. Thissubject is ontinuous to Electrical ircuits. !t the end of the second year secondsemester the student would develo an in de th knowledge of Three hase circuits #star and delta connection for balanced and unbalanced loads$% Transient o eration of thecircuits for &. and as well as !.. Networks% Network 'unctions% Two ort Network (arameters#)%*%!+& and h- arameters$%'ilter and 'ourier series functions for !..ircuits .E,ui ed with this knowledge the student would be able to analye manyengineering roblems by tracing the various elements in the set rocesses in terms of theelectrical e,uivalents. The subject of Network Theory would constitute a basic building block for electricalengineers % in the understanding of electric ower and its Transient state and steady statecharacteristics. Such understanding would also hel the engineer to design his systemafter analying the circuit under all conditions.  Before commencement of the subject the student should have a knowledge of :  ector calculus  om le/ arithmetic  arious functions like trigonometric and e/ onential etc.  0nowledge about solution of &ifferential e,uations in time domain and 1a lacetransform methods.  &ifferentiation and 2ntegration of different functions.+..3.2.T. ourse 'ile -----------------------------------------------------------------------4  -----------------------------------------------------------------------------------Network Thoery UNIT – I THREE PHASE CIRCUITS Objective: The objective of this unit is to make the students familiar with the basic fundamentals of electrical circuits and introduce him5her in the following to ics6  &ifferent circuit elements#3%1 and $ and their characteristics.  Source Transformation of Electrical ircuit.  oltage 7 urrent relationshi for assive elements #for different in ut signals-s,uare% ram % saw tooth% triangular$ Important point an! !e inition:  There are two ty es of network elements 4$ !ctive elements 8$ (assive elements  2nter connection of two or more circuit elements is called a network  2f a network consists of a closed ath in which current can flow it is called acircuit  !ctive elements are those which su ly energy.  (assive elements are those which consume energy.  2n active elements there are two different ty es 4$ (ractical inde endent sources8$ &e endant sources.  There are three different assive elements. o 4$ 3esistors 8$ 2nductor 9$ a acitor Objective t#pe $%etion: 4.Give different ty es of active elements. 8.Name different ty es of assive elements. 9.Give the difference between ideal voltage source and ractical voltage source. e:.Give the difference between ideal current source and ractical current source. ;.Give voltage current relationshi for 3esistor. <.Give voltage current relationshi for 2nductor.=.Give voltage current relationshi for a acitor.>.?hat are energy storage elements@ +..3.2.T. ourse 'ile -----------------------------------------------------------------------8  -----------------------------------------------------------------------------------Network ThoeryA.Give the relations for energy stored in an inductor and ca acitor. 4B.!n 2deal current source in arallel with a resistor is re resented in terms of voltage source as CCCC 44.2f n e,ual resistors are connected in series then e,uivalent resistance is  CCCCCCCCCCCCC 48.2f n e,ual resistors are connected in arallel then e,uivalent resistance is  CCCCCCCCCCCCC 49.2f n e,ual ca acitors are connected in series then e,uivalent ca acitance is  CCCCCCCCCCCCC 4:.2f n e,ual ca acitors are connected in arallel then e,uivalent ca acitance is  CCCCCCCCCCCCC 4;.2f n e,ual inductors are connected in series then e,uivalent inductance is  CCCCCCCCCCCCC 4<.2f n e,ual inductors are connected in arallel then e,uivalent inductance is  CCCCCCCCCCCCC  Ea# T#pe $%etion: 4.E/ lain about different !ctive and (assive elements with their voltage current relationshi s. Prob&em : 4.3educe the network shown below to a single voltage source in series with a resistor between terminals ! D +. +..3.2.T. ourse 'ile -----------------------------------------------------------------------9   +   8 Ω   ++ 9 Ω  8 Ω  8 Ω  9! 8! 4B.48. ;.  -----------------------------------------------------------------------------------Network Thoery8.'ind the e,uivalent resistance between the terminals ! D + in the following network. The students are further advised to solve different roblems in the Te/t +ooks mentioned. Previo% E'amination (%etion : 4.&etermine urrents and oltages of the resistances in the following network usingsource transformation. +..3.2.T. ourse 'ile -----------------------------------------------------------------------:  ; Ω  9 Ω  9 Ω  9 Ω  9 Ω  4 Ω  4 Ω  : Ω  
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