EBOOK - Electrical Circuit Theory and Technology 4th (John Bird)


EBOOK - Lý thuyết và công nghệ mạch điện (John Bird) - 735 Trang.

‘Electrical Circuit Theory and Technology 4th Edition’ provides coverage for a wide range of courses that contain electrical principles, circuit theory and technology in their syllabuses, from introductory to degree level.

New topicsincluded in this edition include resistor construction and colour code, more information on batteries, dangers of constant high current with insulation, loading effect of instruments, earth point and causes of short circuits,potentiometers and rheostats, and rectifier smoothing. In addition, freely available on the website are 10 straightforwardlaboratory experimentswhich may be downloaded and edited.

CONTENTS:

Part 1 Basic electrical engineering
principles 1
1 Units associated with basic electrical
quantities 3
1.1 SI units 3
1.2 Charge 3
1.3 Force 4
1.4 Work 4
1.5 Power 4
1.6 Electrical potential and e.m.f. 5
1.7 Resistance and conductance 6
1.8 Electrical power and energy 6
1.9 Summary of terms, units and their symbols 7
2 An introduction to electric circuits 8
2.1 Standard symbols for electrical components 9
2.2 Electric current and quantity of electricity 9
2.3 Potential difference and resistance 10
2.4 Basic electrical measuring instruments 10
2.5 Linear and non-linear devices 11
2.6 Ohm’s law 11
2.7 Multiples and sub-multiples 11
2.8 Conductors and insulators 13
2.9 Electrical power and energy 13
2.10 Main effects of electric current 16
2.11 Fuses 16
2.12 Insulation and the dangers of constant high current flow 16
3 Resistance variation 17
3.1 Resistor construction 17
3.2 Resistance and resistivity 17
3.3 Temperature coefficient of resistance 20
3.4 Resistor colour coding and ohmic values 22
4 Batteries and alternative sources of energy 25
4.1 Introduction to batteries 25
4.2 Some chemical effects of electricity 26
4.3 The simple cell 26
4.4 Corrosion 27
4.5 E.m.f. and internal resistance of a cell 27
4.6 Primary cells 30
4.7 Secondary cells 31
4.8 Cell capacity 33
4.9 Safe disposal of batteries 33
4.10 Fuel cells 33
4.11 Alternative and renewable energy sources 34
Revision Test 1 35
5 Series and parallel networks 36
5.1 Series circuits 36
5.2 Potential divider 37
5.3 Parallel networks 39
5.4 Current division 41
5.5 Loading effect 45
5.6 Potentiometers and rheostats 46
5.7 Relative and absolute voltages 48
5.8 Earth potential and short circuits 50
5.9 Wiring lamps in series and in parallel 50
6 Capacitors and capacitance 52
6.1 Introduction to capacitors 52
6.2 Electrostatic field 52
6.3 Electric field strength 53
6.4 Capacitance 54
6.5 Capacitors 54
6.6 Electric flux density 55
6.7 Permittivity 55
6.8 The parallel plate capacitor 56
6.9 Capacitors connected in parallel and series 58
6.10 Dielectric strength 62
6.11 Energy stored 62
6.12 Practical types of capacitor 63
6.13 Discharging capacitors 65
7 Magnetic circuits 66
7.1 Introduction to magnetism and magnetic circuits 66
7.2 Magnetic fields 67
7.3 Magnetic flux and flux density 67
7.4 Magnetomotive force and magnetic field strength 68
7.5 Permeability andB–Hcurves 69
7.6 Reluctance 70
7.7 Composite series magnetic circuits 71
7.8 Comparison between electrical and magnetic quantities 74
7.9 Hysteresis and hysteresis loss 75
Revision Test 2 76
8 Electromagnetism 77
8.1 Magnetic field due to an electric current 77
8.2 Electromagnets 79
8.3 Force on a current-carrying conductor 80
8.4 Principle of operation of a simple
d.c. motor 84
8.5 Principle of operation of a moving
coil-instrument 84
8.6 Force on a charge 85
9 Electromagnetic induction 86
9.1 Introduction to electromagnetic induction 86
9.2 Laws of electromagnetic induction 87
9.3 Rotation of a loop in a magnetic field 90
9.4 Inductance 91
9.5 Inductors 92
9.6 Energy stored 93
9.7 Inductance of a coil 93
9.8 Mutual inductance 95
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