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  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 1 of 226 DEPARTMENT OF

    EEE

    A Course Material on

    GE 6252 BASIC ELECTRICAL AND ELECTRONICS ENGINEERING

    By

    Mrs. R.HEMALATHA

    Mrs.K.UMARANI

    Mr.S.VIJAY

    Mr.R.GUNASEKARAN

    ASSISTANT PROFESSOR

    DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

    SASURIE COLLEGE OF ENGINEERING

    VIJAYAMANGALAM 638 056

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 2 of 226 DEPARTMENT OF

    EEE

    QUALITY CERTIFICATE

    This is to certify that the e-course material

    Subject Code : GE 6252

    Subject: Basic Electrical and Electronics Engineering

    Class : I Year Mechanical

    Being prepared by me and it meets the knowledge requirement of the university curriculum.

    Signature of the Author

    Name:

    Designation:

    This is to certify that the course material being prepared by Mrs. Hemalatha.R is of adequate

    quality. She has referred more than five books among them minimum one is from abroad author.

    Signature of HD

    Name:

    SEAL

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 3 of 226 DEPARTMENT OF

    EEE

    CONTENTS

    S.NO TOPIC PAGE NO.

    UNIT I ELECTRICAL CIRCUITS & MEASUREMENTS

    1.1 Basic definitions 7

    1.2 DC circuits 8

    1.3 Ohms Law 10

    1.4 AC Circuits 11

    1.5 Kirchoffs Laws 12

    1.6 Steady State Solution of DC Circuits 13

    1.7 Simple problems using ohms law 14

    1.8 Introduction to AC Circuits 18

    1.9 Waveforms and RMS Value 18

    1.10 Power and Power factor 18

    1.11 Single Phase and Three Phase Balanced Circuits 19

    1.12 Operating Principles of Moving Coil Ammeters and Voltmeters 36

    1.13 Operating Principles of Moving Iron Instruments Ammeters and

    Voltmeters 40

    1.14 Dynamometer type Watt meters 43

    1.15 Dynamometer type Energy meters 47

    UNIT II ELECTRICAL MECHANICS

    2.1 Construction, Principle of Operation of DC Generators 50

    2.2 Basic Equations and Applications of DC Generators 56

    2.3 Construction, Principle of Operation of DC Motor 65

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 4 of 226 DEPARTMENT OF

    EEE

    2.4 Basic Equations and Applications of DC Motor 69

    2.5 Construction, Principle of Operation of Single Phase Transformer 71

    2.6 Basic Equations and Applications of Single Phase Transformer 74

    2.7 Construction, Principle of Operation of Single phase induction

    Motor 82

    2.8 Types of Single phase induction Motor 85

    UNIT III SEMICONDUCTOR DEVICES AND APPLICATIONS

    3.1 Characteristics of PN Junction Diode 98

    3.2 Zener Effect 99

    3.3 Zener Diode and its Characteristics 99

    3.4 Half wave Rectifiers 101

    3.5 Full wave Rectifiers 103

    3.6 Voltage Regulation 104

    3.7 Bipolar Junction Transistor 104

    3.8 CB Configurations and Characteristics 108

    3.9 CE Configurations and Characteristics 111

    3.10 CC Configurations and Characteristics 115

    3.11 Elementary Treatment of Small Signal Amplifier 118

    UNIT IV DIGITAL ELECTRONICS

    4.1 Binary Number System 119

    4.2 Logic Gates 130

    4.3 Boolean algebra 136

    4.4 Half and Full Adders 138

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 5 of 226 DEPARTMENT OF

    EEE

    4.5 Flip- Flops 140

    4.6 Registers and Counters 146

    4.7 A/D and D/A Conversion 150

    UNIT V FUNDAMENTALS OF COMMUNICATION ENGINEERING

    5.1 Types of Signals Analog and Digital Signals 156

    5.2 Modulation and Demodulation Principles of Amplitude. 158

    5.3 Modulation and Demodulation Principles of Frequency

    Modulations. 160

    5.4 Block diagram of Radio 164

    5.5 Block diagram of TV 170

    5.6 Block diagram of Microwave 173

    5.7 Block diagram of Satellite 175

    5.8 Block diagram of Optical Fiber 176

    GLOSSARY 177

    QUESTION BANK 187

    UNIVERSITY QUESTION PAPER 219

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 6 of 226 DEPARTMENT OF

    EEE

    UNIT I ELECTRICAL CIRCUITS & MEASUREMENTS 12

    Ohms Law Kirchoffs Laws Steady State Solution of DC Circuits Introduction to AC

    Circuits Waveforms and RMS Value Power and Power factor Single Phase and Three

    Phase Balanced Circuits.

    Operating Principles of Moving Coil and Moving Iron Instruments (Ammeters and Voltmeters),

    Dynamometer type Watt meters and Energy meters.

    UNIT II ELECTRICAL MECHANICS 12

    Construction, Principle of Operation, Basic Equations and Applications of DC Generators, DC

    Motors, Single Phase Transformer, single phase induction Motor.

    UNIT III SEMICONDUCTOR DEVICES AND APPLICATIONS 12

    Characteristics of PN Junction Diode Zener Effect Zener Diode and its Characteristics Half

    wave and Full wave Rectifiers Voltage Regulation. Bipolar Junction Transistor CB, CE, CC

    Configurations and Characteristics Elementary Treatment of Small Signal Amplifier.

    UNIT IV DIGITAL ELECTRONICS 12

    Binary Number System Logic Gates Boolean Algebra Half and Full Adders Flip- Flops

    Registers and Counters A/D and D/A Conversion (single concepts)

    UNIT V FUNDAMENTALS OF COMMUNICATION ENGINEERING 12

    Types of Signals: Analog and Digital Signals Modulation and Demodulation: Principles of

    Amplitude and Frequency Modulations. Communication Systems: Radio, TV, Fax, Microwave,

    Satellite and Optical Fibre (Block Diagram Approach only).

    TOTAL: 60 PERIODS

    TEXT BOOKS:

    1. V.N. Mittle Basic Electrical Engineering,Tata McGraw Hill Edition, New Delhi, 1990.

    2. R.S. Sedha, Applied Electronics S. Chand & Co., 2006.

    REFERENCES:

    1. Muthusubramanian R, Salivahanan S and Muraleedharan K A, Basic Electrical, Electronics

    and Computer Engineering,Tata McGraw Hill, Second Edition, (2006).

    2. Nagsarkar T K and Sukhija M S, Basics of Electrical Engineering, Oxford press (2005).

    3. Mehta V K, Principles of Electronics, S.Chand & Company Ltd, (1994).

    4. Mahmood Nahvi and Joseph A. Edminister, Electric Circuits, Schaum Outline Series,

    McGraw Hill, (2002).

    5. Premkumar N, Basic Electrical Engineering, Anuradha Publishers, (2003).

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 7 of 226 DEPARTMENT OF

    EEE

    UNIT I ELECTRIC CIRCUITS & MEASUREMENTS

    Prerequisites

    Solid, Liquid and gas particles called molecules. These molecules are made up of atoms

    which can be further spilt into electrons, protons and neutrons. The electrons revolve around the

    nucleus. The electrons presents in the outer most orbits experience a very weak force of

    attraction for the obvious reason that according to coulombs law, the force between two charges

    varies inversely with the square of the distance. These electrons are known as free electrons. The

    movement of electrons are known as electric current

    Introduction

    1.1 Basic Definitions Electric current:

    The continuous flow of electrons constitutes electric current. It is denoted by I and is measured

    in amperes.

    I is also given by I = coulomb / sec

    Electric Potential:

    The electric potential at any point in an electric field is defined as the work done in brining an

    unit positive charge (Q) from infinity to that point against the electric field

    V is given by V =

    Resistance:

    It is the property of a conductor by which it opposes the flow of current. It is denoted by R and

    its unit is ohms ()

    Laws of resistance:

    The resistance of a conductor

    (i). Varies directly with its length (l)

    (ii).Varies inversely with its cross sectional area (A)

    (iii). Depends on the nature of the material

    (iv). Depends on the temperature

    R L

    And R 1/A

    R L / A

    R = L / A

    Where is called specific resistance

    Specific resistance:

    It is defined as the resistance offered by unit cube of the material between its opposite faces. It is

    denoted by and its unit is ohm meter

    = RA / L

  • GE 6252 BASIC ELECTRICAL AND ELECTRONICSENGINEERING

    SCE Page 8 of 226 DEPARTMENT OF

    EEE

    Temperatu

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