Basic Electrical Technology.pdf

2008

Basic Electrical Technology

01.

Version 2

EE IIT, Kharagpur, India

2008

Module

Introduction

Version 2 EE IIT, Kharagpur

Lesson

Introducing the Course on

Basic Electrical

Version 2 EE IIT, Kharagpur

Contents

1 Introducing the course (Lesson-1) 4

Introduction ………………………………………………………………………........... 4

Module-1 Introduction ……………………………………………………………...........

Module-2 D.C. circuits …………………………………………………………………..

Module-3 D.C transient ………………………………………………………………….

Module-4 Single phase A.C circuits ……………………………………………………..

Module-5 Three phase circuits …………………………………………………………...

Module-6 Magnetic circuits & Core losses ………………………………………...........

Module-7 Transformer …………………………………………………………………...

Module-8 Three phase induction motor ………………………………………………….

Module-9 D.C Machines …………………………………………………………...........

Module-10 Measuring instruments ………………………………………………............

Version 2 EE IIT, Kharagpur

Introduction

Welcome to this course on Basic Electrical Technology . Engineering students of almost all

disciplines has to undergo this course (name may be slightly different in different course

curriculum) as a core subject in the first semester. It is needless to mention that how much we are

dependent on electricity in our day to day life. A reasonable understanding on the basics of

applied electricity is therefore important for every engineer.

Apart from learning d.c and a.c circuit analysis both under steady state and transient

conditions, you will learn basic working principles and analysis of transformer, d.c motors and

induction motor. Finally working principles of some popular and useful indicating measuring

instruments are presented.

The course can be broadly divided into 3 major parts, namely: Electrical circuits, Electrical

Machines and Measuring instruments. The course is spread over 10 modules covering these 3-

parts, each module having two or more lessons under it as detailed below.

Contributors

1. Modules 4, 5 and 8 by Prof. N.K. De

2. Modules 2, 3 and 10 by Prof. G.D. Ray

3. Modules 1, 6, 7 and 9 by Dr. T.K. Bhattacharya

Module-1 Introduction

Following are the two lessons in this module.

1.1 Introducing the course

Currently we are in this lesson which deals with the organization of the course material

in the form of modules and lessons.

1.2 Generation, transmission and distribution of electric power: an overview

This lesson highlights conventional methods of generating 3-phase, 50 Hz electrical

power, its transmission and distribution with the help of transmission lines and

substations. It will give you a feel of a modern power system with names and function

of different major components which comprise it.

Module-2 DC circuits

This module consists of seven lessons (2.1-2.7) starting with the fundamental concepts of electric

circuit (active and passive) elements, circuit laws and theorems that established the basic

foundation to solve dc network problems or to analyze the voltage, current and power (delivered

or absorbed) in different branches. At the end of each lesson a set of problem is provided to test

the readers understanding. Answers to these problems are located therein. The contents of each

lesson are described below.

2.1 Introduction to electrical circuits

This lesson provides some basic concepts on Kirchoff’s law, difference between linear

and nonlinear circuits, and understanding the difference between current and voltage

Version 2 EE IIT, Kharagpur

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