## Syllabus For The Subject Elements of Electrical Engineering

ELEMENTS OF ELECTRICAL ENGINEERING

Contents

1 Introduction

Concept of electrical energy

Importance of electrical energy

Sources of electrical energy

Applications of electrical energy

Effects of electric current

Exercises

2 Technical terms and definitions with units

Introduction

Atomic structure

Energy of an electron

Nature of electricity

Electric charge

Definition of electric current with unit

Difference between the electron current flow and the conventional

Current flow

Definition of electromotive force

Effect of electric current and their applications

General symbols used in electrical circuit

Exercises

3 Study of electrical engineering materials

Introduction

Classification of electrical engineering materials

Classification of materials based on atomic structure

Classification of materials

Classification of conducing materials

Low resistivity materials

Low resistive copper alloys

Low resistive conductor materials

Liquid conductor

High resistivity materials

Fullerence

High resistivity alloys

Exercises

Insulating materials

Insulating resins

Liquid insulating materials

Gaseous insulating materials

Miscellaneous insulating materials

Exercises

Semiconductor materials

Exercises

Magnetic materials

Exercises

Refractory materials

Exercises

4 Resistance temperature effects

Resistance

Factors upon which resistance depends resistance law

Specific resistance and its unit

Effect of temperature on resistance

Temperature coefficient of resistance

Value of at different temperatures

Summary of temperature coefficient relations

Exercises

5 Electrical circuits and basic laws

Electrical circuit

Path of electric current

Types of electric circuits

Ohm’s law

Combinations of resistances

Kirchhoff’s laws

Exercises

6 Work, power and energy

Mechanical units

Relationship between mechanical units electrical units

Efficiency

Heating effect of the electric current

Joule’s law of electric heating

Exercises

7 Secondary cells and batteries

Electrolysis

Cell and batteries

Nickel iron battery

Charging of battery

Discharging of battery

Grouping of cells

Efficiency of a battery

Ampere-hour efficiency

Precautions /maintenance of storage batteries

Exercises

8 Electrostatics

Static electricity

Electric charge, positive charge and negative charge

Electric field

Electric intensity or field strength

Electric flux

Electric flux density

Electric potential

Electrical potential difference

Force between parallel conductors

Dielectric strength or breakdown voltage

Uses of dielectrics

Capacitor

Factors affecting capacitance

Types of capacitors

Variable capacitors

Series and parallel combination of capacitors

Charging of a capacitor

Discharging of a capacitor

Exercises

Index