GAT E, I S& P Us GATE, IES & PSU sGAT E, I S & P U

1 9789351377542 GATE, IES & PSUs GATE, IES & PSUs GATE, IES & PSUsFORMULA BOOKforGATE, IES & PSU sELECTRICALENGINEERINGP ublished by Engineers Institute of India 2016By Engineers Institute of IndiaALL RIGHTS RESERVED. No part of this work covered by the copyrightherein may bereproduced, transmitted, stored or used in any form or by anymeans graphic, electronic, or mechanical & chemical, including but notlimited to photocopying, recording, scanning, digitizing, taping, Webdistribution, information networks, or information storage and Institute of India28-B/7, Jia Sarai, Near IIT Hauz Khas New Delhi-110016 Tel: 011-26514888 For publication information, visit :978-93-5156-854-4 Price.

2 WORD TO THE and Engineering Services Examinations are themost prestigious competitive examinations conductedfor graduate engineers. Over the past few years, theyhave become more competitive as more and morenumbers of aspirants are increasingly becominginterested in post graduate qualifications &government jobs for a secured and bright Formula Book consists ofwell-illustratedconcepts, importantformulae and diagrams, which will be highly beneficial at the last leg ofcandidate s includes all the subjects ofElectricalEngineering, InstrumentationEngineering, which are required for all type of competitiveexaminations.

3 Adequate emphasis has been laid down to all the majortopics in the form of Tips / Notes, which will be highly lucrative forobjective and short answertype strategy and revision is a mandatory requirement for clearingany competitive examination. This book covers short notes andformulae for Electronics & Communication book willhelp in quick revision before the GATE, IES & all other best wishes for future careerR. K. RajeshDirectorEngineers Institute of WORD TO THE and Engineering Services Examinations are themost prestigious competitive examinations conductedfor graduate engineers. Over the past few years, theyhave become more competitive as more and morenumbers of aspirants are increasingly becominginterested in post graduate qualifications &government jobs for a secured and bright Formula Book consists ofwell-illustratedconcepts, importantformulae and diagrams, which will be highly beneficial at the last leg ofcandidate s includes all the subjects ofElectricalEngineering, InstrumentationEngineering, which are required for all type of competitiveexaminations.

4 Adequate emphasis has been laid down to all the majortopics in the form of Tips / Notes, which will be highly lucrative forobjective and short answertype strategy and revision is a mandatory requirement for clearingany competitive examination. This book covers short notes andformulae for Electronics & Communication book willhelp in quick revision before the GATE, IES & all other best wishes for future careerR. K. RajeshDirectorEngineers Institute of WORD TO THE and Engineering Services Examinations are themost prestigious competitive examinations conductedfor graduate engineers. Over the past few years, theyhave become more competitive as more and morenumbers of aspirants are increasingly becominginterested in post graduate qualifications &government jobs for a secured and bright Formula Book consists ofwell-illustratedconcepts, importantformulae and diagrams, which will be highly beneficial at the last leg ofcandidate s includes all the subjects ofElectricalEngineering, InstrumentationEngineering, which are required for all type of competitiveexaminations.

5 Adequate emphasis has been laid down to all the majortopics in the form of Tips / Notes, which will be highly lucrative forobjective and short answertype strategy and revision is a mandatory requirement for clearingany competitive examination. This book covers short notes andformulae for Electronics & Communication book willhelp in quick revision before the GATE, IES & all other best wishes for future careerR. K. RajeshDirectorEngineers Institute of book is dedicated to allElectricalEngineersPreparingfor GATE, IES, SSC& Public ELECTRONICS AND DEVICES & AND AND IES?Indian engineering services (IES) constitute of engineers that work under thegovt.

6 Of Indiato manage a large segment of public sector economy whichconstitutes of Railroads, Public works, power , Telecommunications, etc. IESremain the most sought-after careers for the engineering graduates in India. Acombined competitive examination is conducted by UPSC for recruitment tothe Indian Engineering Services. The exam constitutes of a written examfollowed by an interview for personality GATE?In the present competitive scenario, where there is mushrooming ofuniversities and engineering colleges, the only yardstick to measureand testthecalibreof engineering students is the GATE AdvantageMany public sector undertakings such as BHEL, IOCL, NTPC, BPCL, HPCL, BARCand many more PSUs are using the GATE score for selecting candidates fortheir organizations.

7 Students who qualify in GATE are entitled to a stipend ofRs 8,000 per month during their course. Better remuneration is beingoffered for students of as compared to those pursuing good rank assures a good at IITs and IISc, one canlook at a salary package ranging fromRs 7lakh to 30lakh per annum dependingupon specialization and performance. Clearing GATE is also an eligibility clausefor the award of JRF in CSIR strategy and revision is a mandatory requirement for clearing anycompetitive examination. This book covers short notes and formulae forElectronics & Communication book will help in quickrevision before the GATE, IES & all other FORMULA BOOK1.

8 NETWORK THEORY[1]Published by:ENGINEERS INSTITUTE OF INDIA. ALL OF ANALYSIS AND FUNDAMENTALS AND R, L, C PORT COUPLED FORMULA BOOK1. NETWORK THEORY[2]Published by:ENGINEERS INSTITUTE OF INDIA. ALL NETWORK BASICSC urrent: electric current is the time rate of change of chargeflow.(Ampere)Charge transferred between timeandtottqidt Sign Convention:A negative current of 5A flowing in one direction is same as acurrent of +5A in opposite :Voltage or potential difference is the energy required to move a unitcharge through an element, measured in :It is time rateof expending or absorbing energy. Law of conservation of energy must be obeyed in any electric circuit.

9 Algebraic sumof power in a circuit, at any instant of time,must be P = 0 Circuit Elements:Resistor:Linear and bilateral (conduct from both direction)In time domainV(t) =I(t)RInsdomainV(s) = RI(s) R=ohmAll= length of conductor, = resistivity,A= area of cross section Extension of wire tontimesresultsinincrease inresistance:2'Rn R dqidt otEE FORMULA BOOK1. NETWORK THEORY[3]Published by:ENGINEERS INSTITUTE OF INDIA. ALL Compression of wireresults in decrease in resistance:2'RRn Capacitor:All capacitorsare linear and bilateral,except electrolytic capacitorwhich is Domain:Cdv(t)i(t) =dtt1v(t)i(t)dtC In s-domain:I(s) =sCV(s)1V(s) = I(s)sC Capacitor doesn t allow sudden changeof voltage, until impulse of current isapplied.

10 It stores energy in the form of electric field and powerdissipation in idealcapacitor is zero. Impedancecccc1Z = -jX X C Capacitive reactance ; = 2 fInductor:Linear and Bilateral elementTime Domain:( )1( )( )( )tdi tv tLi tv t dtdtL Impedance&LLLZjXXL In s-domainV(s) = sL I(s)1I(s) =V(s)sL Inductor doesn tallowed sudden change of current, until impulse of voltage isapplied. It stores energy in the form of magnetic field. power dissipation in ideal inductor is :4 terminal or 2-port devices.: Stepdown transformer:Step up transformer1122 VNVN 1221 ININ ratioN V1N1N2V2I2+ InputportOutputportI1+ 12NN 21NN EE FORMULA BOOK1. NETWORK THEORY[4]Published by:ENGINEERS INSTITUTE OF INDIA.