Electrical Installations Technology

Electrical Installations Technology

The Commonwealth and International Library: Electrical Engineering Division

1st Edition - January 1, 1968

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  • Author: J. F. Whitfield
  • eBook ISBN: 9781483138053

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Electrical Installations Technology covers the syllabus of the City and Guilds of London Institute course No. 51, the “Electricians B Certificate”. This book is composed of 15 chapters that deal with basic electrical science and electrical installations. The introductory chapters discuss the fundamentals and basic electrical principles, including the concept of mechanics, heat, magnetic fields, electric currents, power, and energy. These chapters also explore the atomic theory of electric current and the electric circuit, conductors, and insulators. The subsequent chapter focuses on the chemistry of an electric cell, which is classified into two types, namely, the primary and secondary cells. This text also describes the principles, construction, types, and specifications of direct current machines. A chapter emphasizes the storage of energy for short periods in a capacitor, along with a brief discussion of its theory and construction. Other chapters are devoted to alternating-current systems. The remaining chapters cover the commonly used electrical measuring instruments in electrical installation work. This book is an invaluable source for electricians.

Table of Contents

  • List of Tables



    Symbols and Abbreviations

    Introduction: Systems of Units

    1. Mechanics

    1.1. Mass, Force, Pressure and Torque

    1.2. Work, Energy and Power

    1.3. Lifting Machines

    1.4. The Parallelogram and Triangle of Forces

    1.5. Exercises

    2. Heat

    2.1. Heat

    2.2. Temperature

    2.3. Temperature Scales

    2.4. Heat Units

    2.5. Specific Heat

    2.6. Heat Transmission

    2.7. Conduction

    2.8. Convection

    2.9. Radiation

    2.10. Change of Dimensions with Temperature

    2.11. Exercises

    3. Basic Electrical Principles

    3.1. What is Electricity?

    3.2. The Atomic Theory of Electric Current

    3.3. The Electric Circuit

    3.4. Conductors and Insulators

    3.5. The Effects of an Electric Current Flow

    3.6. Units of Electric Current Flow and Quantity

    3.7. Electromotive Force and Potential Difference

    3.8. Resistance—Ohm's Law

    3.9. Multiple and Sub-Multiple Units

    3.10. Series Circuits

    3.11. Parallel Circuits

    3.12. Conductor Resistance

    3.13. Volt Drop in Cables

    3.14. The Effect of Temperature on Resistance

    3.15. Exercises

    4. Magnetic Fields and Materials

    4.1. Permanent Magnets and Magnetic Fields

    4.2. Units of Magnetic Flux

    4.3. The Electromagnet

    4.4. Calculations for Air-Cored Solenoids

    4.5. The Effect of Iron on the Magnetic Circuit

    4.6. Magnetization Curves

    4.7. Iron Losses

    4.8. Magnetic Materials

    4.9. Exercises

    5. Magnetic Fields and Electric Currents

    5.1. Introduction

    5.2. Force on a Current-Carrying Conductor Lying in a Magnetic Field

    5.3. E.m.f. Induced in a Conductor which Moves in a Magnetic Field

    5.4. Static Induction

    5.5. Self and Mutual Inductance

    5.6. Lenz's Law

    5.7. Exercises

    6. Power and Energy

    6.1. Electrical Power and Energy

    6.2. Doing IVork with Electricity

    6.3. Water-Heating Calculations

    6.4. Electric Water Heaters

    6.5. Air Heating Calculations

    6.6. Electric Air Heaters

    6.7. Miscellaneous Applications of Electric Heating

    6.8. Control of Electric Heaters

    6.9. Exercises

    7. Primary and Secondary Cells

    7.1. Storing Electricity

    7.2. Simple Introduction to Chemical Formula

    7.3. Primary Cells

    7.4. Secondary Cells

    7.5. Internal Resistance

    7.6. Batteries

    7.7. Capacity and Efficiency

    7.8. Exercises

    8. Direct Current Machines

    8.1. Introduction

    8.2. Generator Principles

    8.3. Motor Principles

    8.4. Construction of d.c. Machines

    8.5. E.m.f. and Terminal Voltage of d.c. Generators

    8.6. Types of d.c. Generator

    8.7. Torque and Back e.m.f of d.c. Motors

    8.8. Types of d.c. Motor

    8.9. Speed Control and Reversal of d.c. Motors

    8.10. Starting and Protection of d.c. Motors

    8.11. Exercises

    9. Electric Fields and Capacitors

    9.1. Introduction

    9.2. Electric Charges and Electric Fields

    9.3. Capacitance

    9.4. Dielectric Breakdown

    9.5. Capacitors in Parallel and in Series

    9.6. Capacitor Construction

    9.7. Exercises

    10. Basic Alternating Current Theory

    10.1. What is Alternating Current?

    10.2. Advantages of a.c. Systems

    10.3. Values for a.c. Supplies

    10.4. Sinusoidal Wave-Forms

    10.5. Vector Representation and Phase Difference

    10.6. The Resistive a.c. Circuit

    10.7. The Inductive a.c. Circuit

    10.8. The Inductive and Resistive a.c. Series Circuit

    10.9. Impedance

    10.10. The Capacitive a.c. Circuit

    10.11. The Capacitive and Resistive a.c. Series Circuit

    10.12. The General Series Circuit

    10.13. Introduction to Three-Phase Systems

    10.14. Connections to Three-Phase Supplies

    10.15. Three-Phase and Single-Phase Supplies

    10.16. Exercises

    11. Power in Alternating-Current Circuits

    11.1. Introduction

    11.2. Power in the Resistive a.c. Circuit

    11.3. Power in the Reactive a.c. Circuit

    11.4. Power in the Resistive and Reactive a.c. Series Circuit

    11.5. Power Factor

    11.6. Rating of Alternating-Current Cables and Plant

    11.7. Power in Three-Phase Circuits

    11.8. Tariffs

    11.9. Exercises

    12. Electrical Measuring Instruments

    12.1. Introduction

    12.2. Permanent-Magnet Moving-Coil Instruments

    12.3. Moving-Iron Instruments

    12.4. Other Instruments

    12.5. Ammeters and Shunts

    12.6. Voltmeters and Multipliers

    12.7. Resistance-Measurement Ammeter and Voltmeter Method

    12.8. The Wheatstone Bridge

    12.9. Ohm-Meters

    12.10. Wattmeters

    12.11. Multi-Range Test Sets

    12.12. Exercises

    13. Alternating-Current Machines

    13.1. Alternator Principles

    13.2. Alternator Speed and Frequency

    13.3. Alternator Construction

    13.4. Basic Principles of the Transformer

    13.5. Voltage and Current Relationships for the Transformer

    13.6. The Construction of Transformers

    13.7. Auto-Transformers

    13.8. Rotating Magnetic Fields

    13.9. Three-Phase Induction Motor Principles

    13.10. Three-Phase Induction Motor Speed Calculations

    13.11. Single-Phase Induction Motors

    13.12. Exercises

    14. The Conversion of Alternating Current to Direct Current

    14.1. Introduction

    14.2. Motor-Generator Converters

    14.3. Valve Rectifiers

    14.4. Solid-State Rectifiers

    14.5. Single-Phase Rectifier Circuits

    14.6. Three-Phase Rectifier Circuits

    14.7. Exercises

    15. Planned Lighting

    15.1. Introduction

    15.2. Light Units

    15.3. The Laws of Illumination

    15.4. Types of Electric Lamp

    15.5. The Average Lumens Method of Calculation

    15.6. Lighting Fittings Layout

    15.7. Measurement of Illumination

    15.8. Exercises


Product details

  • No. of pages: 372
  • Language: English
  • Copyright: © Pergamon 1968
  • Published: January 1, 1968
  • Imprint: Pergamon
  • eBook ISBN: 9781483138053

About the Author

J. F. Whitfield

About the Editor

N. Hiller

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