Waygood - Electrical Science for Technicians

Electrical Science for Technicians

An indispensable resource for electrical technicians and trainees, Electrical Science for Technicians walks readers through the subject in a logical order, providing a historical overview alongside modern electrical theory and practice. You will be guided through the subject in a topic by topic manner with each section building upon the one that came before it. By adding context to the principles of electrical science they become easier to both understand and remember, providing a background in the subject that will remain with you for life.

Fully aligned to the 17th edition of the wiring regulations

Topic-based approach ensures suitability for both technicians and students

Clear objectives outlined at the start and revisited at the end of each chapter as a checklist allow readers to check their learning before moving on.

Adrian Waygood currently works as a freelance lecturer and instructional designer, but in the past has worked for organisations as diverse as the South Wales Electricity Board, the Royal Navy, Royal Navy of Oman, British Aerospace, the Northern Alberta Institute of Technology, the British Columbia Institute of Technology, the UAEs Higher Colleges of Technology, and the Apprenticeship Branch of British Columbias Ministry of Labour.

Electrical Science for Technicians

Adrian Waygood

First published 2015

by Routledge

2 Park Square, Milton Park, Abingdon, Oxon OX14 4RN

and by Routledge

711 Third Avenue, New York, NY 10017

Routledge is an imprint of the Taylor & Francis Group, an informa business

2015 Adrian Waygood

The right of Adrian Waygood to be identified as author of this work has been asserted by him in accordance with sections 77 and 78 of the Copyright, Designs and Patents Act 1988.

All rights reserved. No part of this book may be reprinted or reproduced or utilised in any form or by any electronic, mechanical, or other means, now known or hereafter invented, including photocopying and recording, or in any information storage or retrieval system, without permission in writing from the publishers.

Trademark notice: Product or corporate names may be trademarks or registered trademarks, and are used only for identification and explanation without intent to infringe.

British Library Cataloguing-in-Publication Data

A catalogue record for this book is available from the British Library

Library of Congress Cataloging in Publication Data

Waygood, Adrian.

Electrical science for technicians / Adrian Waygood.

pages cm

ISBN 978-1-138-84926-6 (pbk. : alk. paper) ISBN 978-1-315-72574-1 (ebook) 1. Electrical

engineeringTextbooks. I. Title.

TK146.W374 2015

621.3dc23

2014042155

ISBN: 978-1-138-84926-6 (pbk)

ISBN: 978-1-315-72574-1 (ebk)

Typeset in Univers LT Std by

Servis Filmsetting Ltd, Stockport, Cheshire

To my wife, Anita, for putting up with those long periods of silence, while our garden suffered and a long list of unfinished jobs accumulated, as I sat in front of my computer preparing the manuscript and panicking to meet the publishers deadline!

To my friend and former colleague, Anne Wafaa, who kindly edited much of the original material on which this book is based.

To my old chum, Doug Craig, for kindly reviewing sample chapters.

Contents

It is with a great deal of pleasure that I write this foreword to Electrical Science for Technicians by Adrian Waygood, whom I have known for over thirty years and have the greatest respect for.

Adrian and I worked together for many years in the Department of Electrical Engineering Technology, at the Northern Alberta Institute of Technology (NAIT), in Edmonton, Canada, where we were assigned to both the Electrical Apprenticeship and Electrical Technology programs. I knew him then as an outstanding instructor, and he created a vast amount of electrical learning materials that I, together with many of our colleagues, used on a regular basis. Some elements of this book are based on these learning materials.

I also very much admired his devotion to his students who, in turn, treated him with a great deal of well-earned respect.

Unusually, in addition to his experience as an electrical instructor, Adrian also has a great deal of international experience as an instructional designer, and this is evident from the way he has constructed the content and sequence of each of his two books.

I like to believe that I was instrumental in encouraging him to write his earlier book, An Introduction to Electrical Science, which was published in 2012, intended for apprentices and tradespersons in the electrotechnology industry.

I also believe that this new book achieves the same very high standard of his earlier work. This book continues on from where his previous book left off and, although intended for technology students, it may also prove a useful introduction to the subject for those entering a degree program in electrical engineering.

I thoroughly recommend Electrical Science for Technicians to anyone who wants an interesting and easily assimilated introduction to what is often perceived to be a difficult subject.

George Brain, P.Eng.
Texada Island, British Columbia, Canada

Adrian Waygood is a retired engineer, lecturer and instructional designer, and holds a Higher National Certificate in Electrical Engineering together with a Masters Degree in Education Technology.

He has held commissions in both the Royal Navy and the Royal Navy of Oman, specialising in training engineering artificer apprentices in the RN, and head of curriculum design in the RNO.

In Canada, he taught electrical engineering technology at the Northern Alberta Institute of Technology and worked as an instructional design consultant at the British Columbia Institute of Technology. While at NAIT and BCIT he consulted on curriculum-design projects at technical teachers training colleges in Indonesia and India.

He has also worked as a manager with the Government of British Columbia apprenticeship programme, Senior Training Adviser to the Royal Saudi Air Force, and Head of Instructional Media Production for the Higher Colleges of Technology in the United Arab Emirates.

Welcome to Electrical Science for Technicians. This book continues from where its companion book, An Introduction to Electrical Science, left off.

Although this book is principally aimed at students undertaking technology-level courses, some of its coverage of electrical machines may prove useful for electrical apprentices. I hope, too, that it may be of use as an introductory text for students embarking on engineering degrees, and to hobbyists who are interested in developing a greater understanding of the science behind their particular hobby.

As with its companion book, I have tried to make the topics as interesting as possible by relating, where appropriate, their historical background. I have also tried to develop topics in a conversational, easy-to-understand, logical sequence for example, in the chapters on alternating current, I show how phasor diagrams are constructed, step-by-step, rather than by simply providing the reader with a completed phasor diagram.

I have also attempted to explain the science behind each topic rather than simply treating it as an exercise in mathematics. My approach has been,