Friday, November 28, 2014

Signals Maths from Haykin's Book

Click on the pictures below and open in new tab to view them in large size. 


   
 
          

Wednesday, November 12, 2014

Sunday, November 9, 2014

Signals and Linear Systems PDFs

Download links of related course materials for the courses EEE-3111 and EEE-3112 are given below:

Reference Books
1. MATLAB Programming for Engineers 4th edition by Stephen J. Chapman


Class Notes
1. Basic Operations on Signals

Tuesday, September 23, 2014

SUGGESTIONS! (EEE-1213 & EEE-3111)

Disclaimer: This suggestion only outlines the most important topics. Those of you are targeting TOP marks, you will have to study far more. 

Electrical Circuits II (EEE-1213):
  1. R, L, C branch
  2. Basic Definitions
  3. Average & RMS: Both theory & Maths. Calculations from given figure is must!
  4. Maths related to Z calculation
  5. Example of Chapter 8
  6. Resonance
  7. Phasor algebra & Leading-Lagging is must!!!

Signals & Linear Systems (EEE-3111):
  1. Study all the questions of Midterm: Very Very Important
  2. There will be 1 set (10 marks) from Z transform. Study the supplied sheet.
  3. There will be 1 set (10 marks) from Fourier transform. Review the maths done in class. 
* At least 20 marks common from Midterm's question!
* Most maths will be unchanged (as done/shown in class)!

Friday, August 8, 2014

Signals and Linear Systems (EEE-3111): Special Suggestion for Midterm, Summer 2014

This suggestion does not guarantee A+, it just covers the most important questions.

Theory:

  • Definitions: Signal, Systems, Classification of various signals, Basic system properties (Linearity, Causality etc.), Basic properties of LTI systems (Associative property, Distributive property etc.), PSD, Autocorrelation.
  • Unit Step function and Unit Impulse function.
  • Shifting property of unit impulse function.



Math:
  • Shifting, Compressing a given signal (discussed in class in detail).
  • Draw signals from given equations.
  • Linearity, Time-invariance, Causality check of systems (examples and also exercises given in the last class).
  • Power and Energy calculation of signals.
  • Examples reviewed in class are VVI.

Thank you and good luck.

Thursday, August 7, 2014

Electrical Circuits II (EEE-1213): Syllabus Overview for Midterm, Summer 2014

You'll have to answer 3 out of 4 questions.

Theory:

  • Branches: R, L, C, RL (2 will come in the exam)
  • Definitions: AC, Phasor, Period, Frequency, Angular Frequency, Phase, Phase Difference, Form Factor, Peak Factor etc.
  • Calculation of Average & Effective value of a sinusoidal wave (discussed in last lecture)

Math:
  • Phasor Algebra (at least 6 marks)
  • Leading / Lagging (at least 5 marks)
  • Impedance (Z) Calculation
  • Determination of Period, Phase angle, Angular frequency etc. from a given wave


Thanks everyone. Good luck!

Sunday, June 29, 2014

Download Link of Fundamentals of Electric Circuits (4E)

Click below to download Fundamentals of Electric Circuits by Charles K. Alexander, Matthew N.O. Sadiku (4th Edition).

Download Book

Tuesday, June 3, 2014

EEE-2213: Suggestion, Math Syllabus & Lecture Note

1.  Download 3 Dark Lamp Method lecture note from here.

2. Math Syllabus: 
                         Alternator:                   37.1 to 37.10
                                                                  37.34 to 37.38
                     
                         Induction Motor:        34.1 to 34.11
                                                                   34.26 to 34.28
             
3.  Suggestion: Emphasize on questions of Midterm-1 and Midterm-2. Also give special attention to questions I mentioned as important ones in class. Given below are some of the topics you should study for the finals. 
Note: This is not a suggestion for A+, for doing good in exam you'll have to study all the topics in the syllabus.


  • Alternator:  Basic Principle, 3-dark lamp method of synchronization,  Zero Power Factor Method or Potier Method
  • Induction Motor: Induction Motor Principle, Starting Torque, Condition for Maximum Starting Torque, Effect of Change in Supply Voltage on Starting Torque, Torque under Running Conditions,  Relation between Torque and Slip




EEE-3217: Information Theory Lecture Notes

Here are the materials used in class:

1. Wikipedia Link
Everything except the last lecture has been taken from here. You can also download the PDF of this note from the link below:
Download PDF

2. For Shannon's Theorem and Shannon-Hartley Theorem I shall give you a note to photocopy. Contact me at EEE faculty room.

Wednesday, May 28, 2014

EEE-2213: Syllabus of Semester Final

Alternator:

  1. Basic Principle
  2. Damper Windings
  3. Speed and Frequency
  4. Distribution or Breadth Factor or Winding Factor or Spread Factor
  5. Equation of Induced E.M.F.
  6. Alternator on Load
  7. Vector Diagrams of a Loaded Alternator
  8. Voltage Regulation
  9. Zero Power Factor Method or Potier Method
  10. 3-dark lamp method of synchronization


Induction Motor:

  1. Induction Motor: General Principle
  2. Why Does the Rotor Rotate?
  3. Slip
  4. Starting Torque
  5. Condition for Maximum Starting Torque
  6. Effect of Change in Supply Voltage on Starting Torque
  7. Torque under Running Conditions
  8. Condition for Maximum Torque under Running Conditions
  9. Relation between Torque and Slip
  10. Effect of Change in Supply Voltage on Torque and Speed
  11. Effect of Changes in supply Frequency on Torque and Speed
  12. Torque/Speed Curve
  13. Induction Motor Operating as a Generator
  14. Power Stages in an Induction Motor
  15. Torque, Mechanical Power and Rotor Output
  16. Synchronous Watt
  17. Equivalent Circuit of an Induction Motor




Friday, May 16, 2014

Computer Networks: Sample Question for Midterm-2

Try solving the Packet Tracer Activity. You will need Packet Tracer to open the file (check the bottom of the post for download link).

- There will be two windows: a large one (contains the network topology) and a small window.

1. In the first (small) window, enter your name. Email not needed. Then click OK.

Wednesday, April 30, 2014

CSE-3114/ CSE-3116: Basic Router Configuration via CLI

Today we are going to explore some basic Router configuration commands. We shall use Packet Tracer for this purpose. If you don't have it already, check this post: Computer Networks Introduction
Those of you need a little more familiarization with Packet Tracer, check this post.

Steps to follow:

1.  Open Packet Tracer and place a Router in the workspace. Use a 'Generic' model.

Tuesday, April 15, 2014

Basic LAN Configuration - Practice Topology

Download the Cisco Packet Tracer file (.pkt) and configure the Laptops and Desktops so that they all can communicate with each other.

Download .pkt file

Rules:

  1. Use your assigned IP address given in class.
  2. Find  (a) Network address,  (b) Broadcast address,  (c) Total number of users,  (d) First user's IP address and  (e) Last user's IP address.
  3. After the completion of configuration, use ping command to check connectivity.
  4. Save the file and send it to me via Email (nsadat@live.com)   or   Facebook.


How to proceed:

1. Connect the Desktops and Laptops with appropriate cables with the switch. Use FastEthernet ports.

Sunday, March 16, 2014

Welcome to students of EEE-2213 (Energy Conversion-2)

Dear students, welcome to my blog. Here you will find the necessary course materials (PDFs, Suggestions, Exam schedules, Results etc.) required for EEE-2213.

Given below is the syllabus of this course. We shall start with the 'Alternators' part.

  • Alternators: Construction, Theory of operation. Armature windings, Alternator regulation, Armature Reaction and reactance. Two Reaction Analysis, Transient condition of Alternator. Losses and efficiency, Synchronising and load sharing of alternator.

Tuesday, February 25, 2014

Special Suggestion for Digital Communication (EEE-3217)

Study the following questions:

1. Detection Error Probability (Last Slide, Last Question)
 Download from here  Communication Slides


2. Example 1.1, 3.3, 3.4 from B. Scalar  (pictures are given below OR you can read from PDF)

1.1




Monday, February 24, 2014

Understanding HDB (High Density Bipolar) Coding

High-Density Bipolar or HDB Coding is used mainly for Bandwidth compression. Using this coding system, we eliminate a large number of consecutive zeros and replace them with certain codes.

Here, HDB3 and HDB4 will be discussed.  Follow each step and you should have no problems understanding the process.

Bit pattern:   10100001100000100000101

Step 1: For HDB3, (3+1)=4 zeros and for HDB4, (4+1)=5 zeros will be replaced with code.

Friday, February 21, 2014

Solution of Chapter 4 (Corcoran)

Here's a full solution for Chapter 4 of Alternating Current Circuits (by Kerchner and Corcoran).
For Mid 2, it would be enough to do only the selected problems.

Download Chapter 4 Solution (PDF)

Thank you.

Tuesday, February 18, 2014

Power Point presentations for Digital Communication

All slides for Digital Communication will be uploaded in this post.


1. Presentation on Nyquist criterion, Aliasing, Reconstruction
We have discussed Nyquist criterion (impulse sampling) and aliasing effect in class. But, reconstruction of signal has not been discussed due to lack of time. Study it on your own. I shall try to discuss the topic before final exam if we get enough time.

Download Nyquist, Aliasing, Reconstruction.pptx 
or
Office 97-2003 version:  Download Nyquist, Aliasing, Reconstruction.ppt


Wednesday, February 12, 2014

Wiring Design and Costing Rules

Rules:
  1. Each group will consist of 3 members. In case of insufficient members, 2 students can make a group.
  2. Group members can be chosen according to mutual consent. There's no restriction in this case.
  3. Every group will submit a unique Floor Plan and member list within 18.02.2014 (Tuesday). Floor Plan will be same for all 3 members of a group.
  4. Rest of the calculation (Electrical Points, Conduit Run, Light Calculation, Conduit & Wire Calculation etc.) will be different for each member. 
  5. Designs submitted by each member will be compared with each other for determining the best design. So, sharing one's designing plan with another is not a good idea :)
  6. Final Submission deadline will be decided later.

 N.B: Floor Plan & Group Member List submission deadline: 20.02.2014 (Thursday).

Monday, February 10, 2014

Chapter 3 Solution Manual: Corcoran

Here's a full solution manual for chapter 3 of Corcoran. There are some confusing problems which you may avoid. I shall try to upload another version as soon as I can.

For Mid 1, it would be enough to do only the selected problems.

Download Chapter 3 Solution

Sunday, January 19, 2014

Understanding 'Leading' and 'Lagging' voltage and current : EEE-1213



1.      A normal sine wave can be represented as,






2.      If the waveform is shifted to the right or left of 0°, the expression becomes



          where theta  is the angle in degrees or radians that the waveform has been shifted.



3.      If the waveform passes through the horizontal axis with a positive going (increasing with time) slope before 0°, as shown in Figure 2, the expression is: