### Network Analysis (Theory)

Course File

Network Analysis (ET-222)

Semester / Session: (Fall, 2020) 3rd /2019-2023

E-mail: [email protected]

Office Hours:              10:00 AM to 01:00 PM (The, Thu)

Course TA:                 N.A.

Course Description:   To equip the students with the knowledge and techniques of analyzing electrical networks. The course introduces the analysis of AC circuits (comprising resistors, capacitors, and inductors) excited by sinusoidal sources. The concept of complex frequency, single-phase circuit analysis, Phasors, complex impedance, star-delta transformation, circuits analysis.

Catalog Data:             Course Code:                           ET-222

Course Title:                            Network Analysis

Credit Hours:                           3

Course Designation:                 Core

No of Sessions per week:        1 (Total 16  sessions)

Session Duration:                     180 minutes

Catalog Description:  AC Circuit Analysis: Loop and node analyses for AC circuits. Power factor, power factor improvement. Transients in RL, RC, and RLC circuits.  AC Network Theorems: Superposition, Thevenin, Norton, reciprocity, and maximum power transfer theorem. Poly-Phase Circuits: Star and Delta connections and conversions. Voltage, current, and power calculations. Electric Filters: RC low pass and high pass filter circuits, bandpass, and bandstop filters.

Prerequisite:               Linear Circuit Analysis

Recommended Book:

1. C. Alexander and M. Sadiku, "Fundamentals of Electric Circuits", McGraw- Hill, 5th   Edition, 2013
2. Boylested, “ Introductory Circuit Analysis”
3. Floyd, " Circuit Analysis
4. K.Y. Tang, "Circuit Analysis"

Program Learning Outcome:

This course is designed in conjunction with the following PLOs.

PLO 1. Engineering Knowledge: An ability to apply knowledge of mathematics, science, engineering fundamentals, and an engineering specialization to the solution of complex engineering problems.

PLO 2. Problem Analysis: An ability to identify, formulate, research literature, and analyze complex engineering problems reaching substantiated conclusions using first principles of mathematics, natural sciences, and engineering sciences.

PLO 3. PLO-03:  Design/Development of Solutions: An ability to design solutions for complex engineering problems and design systems, components, or processes that meet specified needs with appropriate consideration for public health and safety, cultural, societal, and environmental considerations

Course Learning Outcome (CLO):

Upon successful completion of this course, the student will be able to:

 CLO No Course Learning Outcome (CLO) Statements Taxonomy Domain Mapped PLO Assessment Tool CLO-1 Carry out the AC circuits concept by Extrapolating the DC counterpart. C-3 PLO 1 A1, Q1, MP1, FP-1 CLO-2 Critics and justification of AC circuits based on utilizations of through analysis concept. C-5 PLO 2 A2, Q2, MP2,  FP-2 CLO-3 Apply the concept to develop circuits for given operating requirement. C3 PLO 3 A3, Q3, FP-3

NOTE:  Domain:          C = Cognitive,

Assessment Tool: A = Assignment, Q = Quiz, M = Midterm, F = Final (P1: Part1)

Course Professional Outcome/ Industrial Usage:

After successful completion of this course, the student should be able to Use Kirchhoff’s laws, circuit theorems, and node voltage methodology to solve 1. AC circuits. 2. Solve 2nd order transient circuits. 3. Apply steady-state sinusoidal analysis to circuits. 4. Demonstrate an understanding of phasors and phasors diagrams for AC circuit analysis. 5. The purpose is to make students familiar with the modern hierarchy of AC circuit examination and explain to them the state-of-the-art network analysis.

Course Outline and

Sessions Breakdown:

1. Analyzing Second-order Circuits (CLO 1)

(6 Sessions)

Introduction to Capacitor & Inductor, understanding of Steady-state & transit response of RC & RL, / Step response of an RL & RC Circuit. Current and voltage transients, RLC circuits with DC and AC excitation, Finding initial & final value, The Source free series RLC Circuits. The Source fee Parallel RLC Circuits, Step Response of Series & Parallel RLC circuits. General Second-order circuits deriving equations (overdamped., underdamped. & critically damped cases).

2. AC Circuits (Sinusoids and Phasors) (CLO 1)

(4 Sessions)

Introduction to Sinusoids and Phasors, Phasors Relationships for Circuit Elements (Time Domain & Phasors Domain) Impedance & Admittance & their Combination, Kirchhoff’s Laws in the frequency domain. Star-delta transformation in DC & AC, voltage-division relationship & current-division principle. Application of Single-Phase circuits as Phase Shifter & AC Bridges

3. AC circuits Analysis (AC Network Theorems) (CLO 2)

(8 Sessions)

AC Circuit Analysis using Nodal Analysis, Super Node, Mesh Analysis, and Super Mesh. Analyzing circuit using Superposition Theorem and Source Transformation Theorem. Thevenin and Norton Theorem. AC Power Analysis, Instantaneous, and Average. Maximum Power Transfer Theorem, Effective or RMS Value, Apparent Power, Power Triangle, Power Factor, and Power Factor Correction.

4. Poly-phase circuits Analysis (CLO 2)

(8 Sessions)

Poly-phase circuits, phase sequence, vector diagrams for balance and unbalanced three-phase networks, balanced three-phase voltages, balanced wye-wye connection, balanced wye-delta connection, balanced delta-delta connection, balanced delta-wye connection, power in a balanced system (power calculation).

5. Design / Construction of Electric Filters  (CLO 3)

(6 Sessions)  Understanding, Constructing, and Implementing  RC low pass and high pass filter circuits, bandpass and bandstop filters

COURSE DISTRIBUTION ON WEEKLY BASIS

 Weeks Course Contents / Topic of the Lecture Quiz/ Assignment WEEK 01 Analyzing First order Circuits Introduction to Capacitor & Inductor, understanding of Steady-state & transit response of RC & RL (1st Order Circuits) / Step response of an RL & RC Circuit WEEK 02 Analyzing Second-order Circuits: Current and voltage transients, RLC circuits with DC and AC excitation, Finding initial & final value, The Source free series RLC Circuits, WEEK 03 The Source fee Parallel RLC Circuits, Step Response of Series & Parallel RLC circuits. General Second-order circuits deriving equations (overdamped, underdamped. & critically damped cases). WEEK 04 AC Circuits (Sinusoids and Phasors)   Introduction to Sinusoids and Phasors, Phasors Relationships for Circuit Elements (Time Domain & Phasors Domain) Impedance & Admittance & their Combination, Kirchhoff’s Laws in the Frequency Domain. WEEK 05 Star-delta transformation in DC & AC, voltage-division relationship & current-division principle. Application of Single-Phase circuits as Phase Shifter & AC Bridges Assignment 1 WEEK 06 AC Circuit Analysis (AC Network Theorems), AC Circuit Analysis using Nodal Analysis, Super Node, Mesh Analysis, and Super Mesh WEEK 07 Analyzing circuit using Superposition Theorem and Source Transformation Theorem Quiz 1 WEEK 08 Thevenin and Norton Theorem, Summary, and Revision. WEEK 09 Mid Term Exam Break WEEK 10 AC Power Analysis, Instantaneous, and Average Power and Maximum Power Transfer Theorem, WEEK 11 Effective or RMS Value, Apparent Power, Power Triangle, Power Factor, and Power Factor Correction WEEK 12 Poly-phase circuits, phase sequence, vector diagrams for balance and unbalanced three-phase networks, balanced three-phase voltages Assignment 2 WEEK 13 Balanced wye-wye connection, balanced wye-delta connection, WEEK 14 balanced delta-delta connection and their problems Quiz 2 WEEK 15 balanced delta-wye connection, power in a balanced system (power calculation) WEEK 16 RC low pass and high pass filter circuits Assignment 3 WEEK 17 Bandpass and bandstop filters Quiz 3 WEEK 18 Final Term Examination

Projects

Design Activities:        Students will be asked to design a project / solve a complex engineering problem

Policies

1. No makeup tests or quizzes, except in case of emergency, e.g. illness and accident. For make-up tests, a medical certificate is required and the instructor must be notified in advance of the test.
2. No late assignment will be accepted.

Students will be evaluated based on their completion of quizzes, class tests, and final exams. Your overall grade will be determined on the following basis.

 Description Marks Percentage Quizzes (3) 30 10 Assignments (3) 30 10 Mid Term Exam 30 30 Final Exam 50 50

Class notes and Handouts:

Students must take notes in the class. Derivations and problems would be copied from the board as the instructor writes while the student should note down important points as the instructor orally delivers the lecture. This body of material would form the most important asset of the student for exam preparation and in obtaining good grades.

Additional study material supplementing the class notes is the textbook. The student must always inculcate the habit of book reading for deepening and strengthening the concepts gained in the class.

Attendance Policy:

Class attendance is mandatory. You are expected to be present in all classes. The students having their attendance less than 75% will not be allowed to appear in the exam and will be awarded an “F” grade henceforth.

Homework Policy:

• You SHOULD NOT copy homework from classmates. You may consult with the instructors or one of your classmates if there is a homework problem that you find difficult.
• Copying assignments will not carry any benefit because quizzes will be based on assignments and most of the assignments will be marked based on quizzes.
• Late homework is not accepted for any reason.
• Homework papers should have a cover page showing name, ID number, date, problem number, and assignment number.
• Class serial number should appear on the top right-hand corner of the cover page.
• All problems in an assignment set should be arranged sequentially.
• A4 Paper should be used for Assignments.

Quizzes:

These will be held promptly on the designated day. They will cover the material taught in the previous weeks. Late arrival or non-attendance without a legitimate excuse will mean that you are ineligible to take that quiz.

The UOS is an academic community whose purpose is the pursuit of knowledge and the development of its graduates as leading experts in their academic disciplines. All members of this community must be committed to the principles of truth and academic honesty. Academic dishonesty includes the following acts committed knowingly or intentionally by the student:

• Cheating: Using or attempting to use unauthorized materials and assistance, such as notes, study aids, electronic communication devices of any sort, or any other forms of unauthorized information or consulting any unauthorized sources, in any academic assignment, exercise, or examination.
• Fabrication: Falsifying or inventing research, citations, or any information on any academic assignment, exercise, or examination.
• Plagiarism: Representing another’s words or ideas as one’s own or failing to give proper credit to outside sources of information in any academic assignment, exercise, or examination.
• Facilitating academic dishonesty: Aiding or assisting another in cheating, fabrication, or plagiarism.

Students who have committed an act of academic dishonesty are subject to one or more of the following penalties:

• A written warning
• A reduction in grade for the assignment
• A zero grade for the assignment
• A reduction of the grade for the course, including an F grade for the course.
• Suspension from the Wah Engineering College for one or more semesters.
• Expulsion from the Wah Engineering College.

Records of incidents of academic dishonesty will be kept on file at the Wah Engineering College and may be reported to the student’s guardian and sponsor.

Students who are in doubt about whether certain academic activities are honest or not should discuss the matter with the course instructor or consult the WEC policy on academic integrity.

Disclaimer:

The instructor reserves the right to change, and adjust the policies and class schedules at any time during the semester.