Naseer Lecturer University of Engineering amp Technology Lahore KSK Campus Electrical Technology E mail ammaruetedupk Lecture1 Introduction to the Subject Course Details Instructor Detail ID: 1030984
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1. Network Analysis1Ammar NaseerLecturerUniversity of Engineering & Technology, LahoreKSK Campus Electrical Technology.Email: ammar@uet.edu.pkLecture-1Introduction to the Subject
2. Course DetailsInstructor DetailInstructor: Ammar NaseerOffice: Faculty RoomEmail: ammar@uet.edu.pkTelephone: 03326360801Research Interest: Instrumentation and ControlCouse DetailCredit hour: 3Lecture: DaySchedule: TimeLab: DaySchedule: Time
3. Course OutlineElectrical Technology Network AnalysisConcepts of Voltage, Current, Energy and PowerTypes of Current and Voltage Sources (Dependent & Independent)Series-Parallel CombinationOhm’s LawKirchhoff’s Voltage and Current LawsVoltage and Current Division Rules Circuit Element (R, L & C) Response of R, L & C to DC Sources Power Factor Causes and EffectsNodal and Mesh AnalysesSuperpositionSource transformationThevenin and Norton TheoremMaximum Power transferTransient Response of Circuits under R, L and C, Average and RMS ValuesPhasor Concept and Complex Impedance
4. Scoring & GradingAssessment TechniqueWeightageCLO MappingQuizzes20%CLO 1 to CLO 3Assignment10%CLO 1 to CLO 3Midterm30%CLO 1 to CLO 2Final40%CLO 2 to CLO 3
5. PrerequisiteThe main prerequisites, for Electrical TechnologyPhysicsCalculusMatricesThe main prerequisites, for Network AnalysisElectrical Technology
6. TextbooksCourse bookWilliam D. Stanley “Network Analysis”, Pearson Education J D Irwin and R M Nelms, "Basic Engineering Circuit Analysis", Wiley, 9th Edition, 2008Recommended booksS. Franco, "Electric Circuits Fundamentals", Oxford University Press, (Latest Edition).R E Thomas, A J Rosa and G J Toussaint, "The Analysis and Design of Linear Circuits" John Wiley, 8th Edition,C K Alexander and M NO Sadiku, “Fundamental of Electric Circuits", McGraw Hill, 4th Edition.W Hayt, J Kemmerly and S Durbin, "Engineering Circuit Analysis", McGraw- Hill, 7th Edition, 2007.
7. Lecture ContentIntroduction to Network AnalysisCurrent and VoltagePower and EnergyElement lawActive and PassiveVoltage and Current Source (dependent and Independent)Resistor, Capacitor and InductorConnection lawNode, branches and loopEquivalent resistorKirchhoff Current lawKirchhoff Voltage LawVoltage Divider RuleCurrent Divider Rule
8. Network AnalysisMany branches of electrical engineering, such as power, electric machines, control theory, electronics, communications, and instrumentation, are based on Network Analysis TheoryNetwork Analysis is the process of finding specific voltages and currents in a network once its individual elements and their interconnections are known.
9. Current and VoltageElectric current is the time rate of change of charge, measured in amperes (A).Voltage is the energy required to move a unit charge through an element, measured in volts (V).
10. Power and EnergyPower is the time rate of expending or absorbing energy, measured in watts (W).NOTE 12W -12W
11. Network AnalysisNetwork Analysis set upon two set of lawElement Law: relates to terminal voltage and current of individual element.Example: Ohm’s lawConnection law: relates the voltage and current shared at the interconnection.Example: Kritchoff’s law
12. Element Law
13. Active and PassiveActive Element can generate energyExamples include Voltage and Current SourceBatteriesGeneratorOP AMPPassive Element cannot generate energy but can store themExamples include ResistorCapacitor and Inductor
14. Voltage and Current SourceAn ideal independent source is an active element that provides a specified voltage or current that is completely independent of other circuit elements.An ideal dependent source is an active element in which the source quantity is controlled by another voltage or current.
15. Voltage SourceAn ideal voltage source has zero internal resistance.An ideal voltage source gives a constant voltage.
16. Voltage SourceAn ideal voltage source has zero internal resistance.An ideal voltage source gives a constant voltage.Practical voltage source has an internal resistance connected in series with an ideal voltage.
17. Current SourceAn ideal current source gives a constant current.An ideal current source has infinite internal resistance.
18. Current SourceAn ideal current source gives a constant currentAn ideal current source has infinite internal resistancePractical current source has an internal resistance connected in parallel with ideal current source
19. Dependent SourceDependent source behave just like independent current and voltage sources, except their values are dependent in some way or another voltage or current in the circuit.
20. ResistorThe resistance R of an element denotes its ability to resist the flow of electric current.Ohm’s law states that the voltage v across a resistor is directly proportional to the current i flowing through the resistor.A short circuit is a circuit element with resistance approaching zero.An open circuit is a circuit element with resistance approaching infinity.
21. CapacitorA capacitor is a circuit element that consists of two conducting surfaces separated by a non-conducting or dielectric material.The capacitance is calculated as Where A represents the area d is distance and is the permittivity of free spaceThe unit of capacitance is the farad (F)
22. InductorThe inductor is a dynamic circuit element involving the time variation of the magnetic field produced by a current.The inductance is calculated as where N is the number of turns, is the length, A is the cross-sectional area,and is the permeability of the core.The unit of inductance is the henry (H)
23. Connection Law
24. BranchA branch represents a single element such as a voltage source, electric source or a resistor.
25. NodeA node is the point of connection between two or more branches.
26. LoopA loop is any closed path in a circuit.An independent loop is one that contains at least one element not contained in another loop.A network satisfies the fundamental theorem of network topology# branches = # loops + # nodes - 1
27. Practice ProblemGive the number of branchesnodesloops
28. Series ResistorThe equivalent resistance of any number of resistors connected in series is the sum of the individual resistances.
29. Parallel ResistorThe equivalent resistance of two parallel resistors is equal to the product of their resistances divided by their sum.
30. Practice ProblemFind for the circuit
31. Practice ProblemFind for the circuit
32. Kirchhoff’s Current LawKirchhoff’s current law (KCL) states that the algebraic sum of currents entering a node is zero.
33. Parallel Current
34. Kirchhoff’s Voltage LawKirchhoff’s voltage law (KVL) states that the algebraic sum of all voltages around a loop is zero.
35. Series Voltage
36. KVLThe voltage encountered from + to – is positiveThe voltage encountered from - to + is negative Applying KVL across the loop
37. Practice Problem
38. Practice Problem
39. Source Transformation
40. Source Transformation (Proof)
41. Practice ProblemFind Vx and Ix
42. Voltage Divider Rule
43. Current Divider Rule
44. End of Lecture-144To download this lecture visithttp://ammaruet.weebly.com/