Electrical and Electronic Principles and Technology / Edition 3

Electrical and Electronic Principles and Technology / Edition 3

by John Bird
ISBN-10:
0750685565
ISBN-13:
9780750685566
Pub. Date:
09/17/2007
Publisher:
Taylor & Francis

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Overview

Electrical and Electronic Principles and Technology / Edition 3

In this book John Bird introduces electrical principles and technology through examples rather than theory -- enabling students to develop a sound understanding of the principles needed by technicians in fields such as electrical engineering, electronics and telecommunications. No previous background in engineering is assumed, making this an ideal text for vocational courses and introductory courses for undergraduates. This new edition of Electrical and Electronic Principles and Technology has been brought fully in line with the new BTEC National specifications for the units: Electrical and Electronic Principles and Further Electrical and Electronic Principles, and the corresponding AVCE units. It is also designed to cover the requirements of Intermediate GNVQ and the new BTEC First specifications. Includes: 400 worked examples, 900 problems and 340 multiple choice questions (answers provided). At intervals through the text assessment papers are provided, which are ideal for tests or homework. These are the only problems where answers are not provided in the book, but fully worked solutions are available to lecturers only

Product Details

ISBN-13: 9780750685566
Publisher: Taylor & Francis
Publication date: 09/17/2007
Edition description: Older Edition
Pages: 432
Product dimensions: 7.50(w) x 10.30(h) x 1.00(d)

About the Author

John Bird, BSc (Hons), CEng, CSci, CMath, FITE, FIMA, FCollT, is the former Head of Applied Electronics in the Faculty of Technology at Highbury College, Portsmouth, UK. More recently he has combined freelance lecturing and examining, and is the author of over 130 textbooks on engineering and mathematical subjects with worldwide sales of over one million copies. He is currently lecturing at the Defence School of Marine and Air Engineering in the Defence College of Technical Training at HMS Sultan, Gosport, Hampshire, UK.

Table of Contents

Prefaceix
Section 1Basic Electrical and Electronic Engineering Principles1
1Units associated with basic electrical quantities3
1.1SI units3
1.2Charge3
1.3Force4
1.4Work4
1.5Power4
1.6Electrical potential and e.m.f.5
1.7Resistance and conductance5
1.8Electrical power and energy6
1.9Summary of terms, units and their symbols7
2An introduction to electric circuits9
2.1Electrical/electronic system block diagrams9
2.2Standard symbols for electrical components10
2.3Electric current and quantity of electricity10
2.4Potential difference and resistance12
2.5Basic electrical measuring instruments12
2.6Linear and non-linear devices12
2.7Ohm's law13
2.8Multiples and sub-multiples13
2.9Conductors and insulators14
2.10Electrical power and energy15
2.11Main effects of electric current17
2.12Fuses18
3Resistance variation20
3.1Resistance and resistivity20
3.2Temperature coefficient of resistance22
3.3Resistor colour coding and ohmic values25
4Chemical effects of electricity29
4.1Introduction29
4.2Electrolysis29
4.3Electroplating30
4.4The simple cell30
4.5Corrosion31
4.6E.m.f. and internal resistance of a cell31
4.7Primary cells34
4.8Secondary cells34
4.9Cell capacity35
Assignment 138
5Series and parallel networks39
5.1Series circuits39
5.2Potential divider40
5.3Parallel networks42
5.4Current division45
5.5Wiring lamps in series and in parallel49
6Capacitors and capacitance52
6.1Electrostatic field52
6.2Electric field strength53
6.3Capacitance54
6.4Capacitors54
6.5Electric flux density55
6.6Permittivity55
6.7The parallel plate capacitor57
6.8Capacitors connected in parallel and series59
6.9Dielectric strength62
6.10Energy stored in capacitors63
6.11Practical types of capacitor64
6.12Discharging capacitors66
7Magnetic circuits68
7.1Magnetic fields68
7.2Magnetic flux and flux density69
7.3Magnetomotive force and magnetic field strength70
7.4Permeability and B-H curves70
7.5Reluctance73
7.6Composite series magnetic circuits74
7.7Comparison between electrical and magnetic quantities77
7.8Hysteresis and hysteresis loss77
Assignment 281
8Electromagnetism82
8.1Magnetic field due to an electric current82
8.2Electromagnets84
8.3Force on a current-carrying conductor85
8.4Principle of operation of a simple d.c. motor89
8.5Principle of operation of a moving-coil instrument89
8.6Force on a charge90
9Electromagnetic induction93
9.1Introduction to electromagnetic induction93
9.2Laws of electromagnetic induction94
9.3Inductance97
9.4Inductors98
9.5Energy stored99
9.6Inductance of a coil99
9.7Mutual inductance101
10Electrical measuring instruments and measurements104
10.1Introduction104
10.2Analogue instruments105
10.3Moving-iron instrument105
10.4The moving-coil rectifier instrument105
10.5Comparison of moving-coil, moving-iron and moving-coil rectifier instruments106
10.6Shunts and multipliers106
10.7Electronic instruments108
10.8The ohmmeter108
10.9Multimeters109
10.10Wattmeters109
10.11Instrument 'loading' effect109
10.12The cathode ray oscilloscope111
10.13Waveform harmonics114
10.14Logarithmic ratios115
10.15Null method of measurement118
10.16Wheatstone bridge118
10.17D.C. potentiometer119
10.18A.C. bridges120
10.19Q-meter121
10.20Measurement errors122
11Semiconductor diodes127
11.1Types of materials127
11.2Silicon and germanium127
11.3n-type and p-type materials128
11.4The p-n junction129
11.5Forward and reverse bias129
11.6Semiconductor diodes130
11.7Rectification132
12Transistors136
12.1The bipolar junction transistor136
12.2Transistor action137
12.3Transistor symbols139
12.4Transistor connections139
12.5Transistor characteristics140
12.6The transistor as an amplifier142
12.7The load line144
12.8Current and voltage gains145
12.9Thermal runaway147
Assignment 3152
Formulae for basic electrical and electronic engineering principles153
Section 2Further Electrical and Electronic Principles155
13D.C. circuit theory157
13.1Introduction157
13.2Kirchhoff's laws157
13.3The superposition theorem161
13.4General d.c. circuit theory164
13.5Thevenin's theorem166
13.6Constant-current source171
13.7Norton's theorem172
13.8Thevenin and Norton equivalent networks175
13.9Maximum power transfer theorem179
14Alternating voltages and currents183
14.1Introduction183
14.2The a.c. generator183
14.3Waveforms184
14.4A.C. values185
14.5The equation of a sinusoidal waveform189
14.6Combination of waveforms191
14.7Rectification194
Assignment 4197
15Single-phase series a.c. circuits198
15.1Purely resistive a.c. circuit198
15.2Purely inductive a.c. circuit198
15.3Purely capacitive a.c. circuit199
15.4R-L series a.c. circuit201
15.5R-C series a.c. circuit204
15.6R-L-C series a.c. circuit206
15.7Series resonance209
15.8Q-factor210
15.9Bandwidth and selectivity212
15.10Power in a.c. circuits213
15.11Power triangle and power factor214
16Single-phase parallel a.c. circuits219
16.1Introduction219
16.2R-L parallel a.c. circuit219
16.3R-C parallel a.c. circuit220
16.4L-C parallel a.c. circuit222
16.5LR-C parallel a.c. circuit223
16.6Parallel resonance and Q-factor226
16.7Power factor improvement230
17Filter networks236
17.1Introduction236
17.2Two-port networks and characteristic impedance236
17.3Low-pass filters237
17.4High-pass filters240
17.5Band-pass filters244
17.6Band-stop filters245
18D.C. transients248
18.1Introduction248
18.2Charging a capacitor248
18.3Time constant for a C-R circuit249
18.4Transient curves for a C-R circuit250
18.5Discharging a capacitor253
18.6Current growth in an L-R circuit255
18.7Time constant for an L-R circuit256
18.8Transient curves for an L-R circuit256
18.9Current decay in an L-R circuit257
18.10Switching inductive circuits260
18.11The effects of time constant on a rectangular waveform260
19Operational amplifiers264
19.1Introduction to operational amplifiers264
19.2Some op amp parameters266
19.3Op amp inverting amplifier267
19.4Op amp non-inverting amplifier269
19.5Op amp voltage-follower270
19.6Op amp summing amplifier271
19.7Op amp voltage comparator272
19.8Op amp integrator272
19.9Op amp differential amplifier274
19.10Digital to analogue (D/A) conversion276
19.11Analogue to digital (A/D) conversion276
Assignment 5281
Formulae for further electrical and electronic engineering principles283
Section 3Electrical Power Technology285
20Three-phase systems287
20.1Introduction287
20.2Three-phase supply287
20.3Star connection288
20.4Delta connection291
20.5Power in three-phase systems293
20.6Measurement of power in three-phase systems295
20.7Comparison of star and delta connections300
20.8Advantages of three-phase systems300
21Transformers303
21.1Introduction303
21.2Transformer principle of operation304
21.3Transformer no-load phasor diagram306
21.4E.m.f. equation of a transformer308
21.5Transformer on-load phasor diagram310
21.6Transformer construction311
21.7Equivalent circuit of a transformer312
21.8Regulation of a transformer313
21.9Transformer losses and efficiency314
21.10Resistance matching317
21.11Auto transformers319
21.12Isolating transformers321
21.13Three-phase transformers321
21.14Current transformers323
21.15Voltage transformers324
Assignment 6327
22D.C. machines328
22.1Introduction328
22.2The action of a commutator329
22.3D.C. machine construction329
22.4Shunt, series and compound windings330
22.5E.m.f. generated in an armature winding330
22.6D.C. generators332
22.7Types of d.c. generator and their characteristics333
22.8D.C. machine losses337
22.9Efficiency of a d.c. generator337
22.10D.C. motors338
22.11Torque of a d.c. motor339
22.12Types of d.c. motor and their characteristics341
22.13The efficiency of a d.c. motor344
22.14D.C. motor starter347
22.15Speed control of d.c. motors347
22.16Motor cooling350
23Three-phase induction motors354
23.1Introduction354
23.2Production of a rotating magnetic field354
22.3Synchronous speed356
23.4Construction of a three-phase induction motor357
23.5Principle of operation of a three-phase induction motor358
23.6Slip358
23.7Rotor e.m.f. and frequency359
23.8Rotor impedance and current360
23.9Rotor copper loss361
22.10Induction motor losses and efficiency361
23.11Torque equation for an induction motor363
23.12Induction motor torque-speed characteristics366
23.13Starting methods for induction motors367
23.14Advantages of squirrel-cage induction motors367
23.15Advantages of wound rotor induction motors368
23.16Double cage induction motor369
23.17Uses of three-phase induction motors369
Assignment 7372
Formulae for electrical power technology373
Answers to multi-choice questions375
Index377

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