Page 6 - Basics of Electrical, Electronic and Communication
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3.8 Permeability . . . . . . . . . . . . . . . . . . . . . . . 36
3.9 Relative permeability . . . . . . . . . . . . . . . . . . 37
3.10 Reluctance . . . . . . . . . . . . . . . . . . . . . . . . 37
3.11 Permeance . . . . . . . . . . . . . . . . . . . . . . . . 38
3.12 Leakage flux in magnetic circuit . . . . . . . . . . . . 40
3.13 Electromagnetic induction . . . . . . . . . . . . . . . 42
3.13.1 Faraday’s laws of electromagnetic induction . . 43
3.13.2 Lenz’s law . . . . . . . . . . . . . . . . . . . 44
3.13.3 Electromagnetically Induced emf . . . . . . . 44
3.13.4 Dynamically Induced emf . . . . . . . . . . . 45
3.13.5 Fleming’s right hand rule (Generator rule) . . . 47
3.13.6 Fleming’s left hand rule (Motor rule) . . . . . 48
3.13.7 Statically induced emf . . . . . . . . . . . . . 48
3.13.8 Self induced emf . . . . . . . . . . . . . . . . 48
3.13.9 Self inductance . . . . . . . . . . . . . . . . . 50
3.13.10 Mutually induced emf . . . . . . . . . . . . . 51
3.13.11 Mutual inductance . . . . . . . . . . . . . . . 52
3.13.12 Coefficient of coupling . . . . . . . . . . . . . 53
4 Single Phase AC Circuits 59
4.1 AC Fundamentals . . . . . . . . . . . . . . . . . . . . 59
4.2 Generation of sinusoidal emf . . . . . . . . . . . . . . 59
4.3 Definitions . . . . . . . . . . . . . . . . . . . . . . . . 63
4.4 Phasor representation of alternating quantities . . . . . 70
4.5 Forms of phasor representation . . . . . . . . . . . . . 71
4.6 Addition and subtraction of two phasors . . . . . . . . 73
4.7 Multiplication and division of two phasors . . . . . . . 73
4.8 AC through a purely resistive circuit . . . . . . . . . . 75
4.9 AC through a purely inductive circuit . . . . . . . . . . 77
4.10 AC through a purely capacitive circuit . . . . . . . . . 79
4.11 AC through series R-L circuit . . . . . . . . . . . . . . 81
4.12 AC through series R-C circuit . . . . . . . . . . . . . 84
4.13 AC through series R-L-C circuit . . . . . . . . . . . . 86
4.14 Active power, reactive power and apparent power . . . 89
4.14.1 Active power (P) . . . . . . . . . . . . . . . . 90
4.14.2 Reactive power (Q) . . . . . . . . . . . . . . . 90
4.14.3 Apparent power (S) . . . . . . . . . . . . . . . 91
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