TM 11-661 Electrical Fundamentals: Direct Current - Info and Reading Options

The Internet Archive:

TM 11-661 <i>Electrical Fundamentals: Direct Current</i> 1951-06-22. CONTENTS CHAPTER 1. MAGNETISM. Invisible forces 1 1 Early history of magnetism 2 1 Magnetic compass 3 1 Magnetism and electricity 4 1 Experiment: attraction of iron filings to a bar magnet 5 1 Artificial magnets 6 3 Magnetic and nonmagnetic substances 7 3 Magnetic poles 8 4 Earth as a magnet 9 5 Molecular theory of magnetism 10 5 Attraction and repulsion of magnetic poles 11 5 Factors affecting magnetic force 12 7 Magnetic field 13 8 Lines of force 14 11 Characteristics of magnetic fields 15 13 Permeability 16 14 Handling and care of magnets 17 15 Theory of magnetization 18 15 Summary 19 16 Review questions 20 17 2. ELECTRIFICATION. Early history of electrification 21 18 Attraction and repulsion 22 18 Theory of electrification 23 20 Structure of matter 24 20 Structure of the atom 25 21 Electrons, protons, and neutrons 26 23 Forces associated with matter in the universe 27 25 Charging 28 26 Summary 29 27 Review questions 30 27 3. ELECTROSTATICS. Electric field and lines of force 31 29 Exploring an electric field 32 29 Electric lines of force 33 29 Lines of force associated with two charged bodies 34 30 Potential energy in gravitational field 35 32 Potential in an electric field 36 32 Summary 37 35 Review questions 38 36 4. CONDUCTORS AND INSULATORS. Free electrons 39 37 Conductors and insulators 40 37 Summary 41 38 Review questions 42 38 CHAPTER 5. CURRENT, VOLTAGE, AND RESISTANCE. Electric circuit 43 39 Current 44 39 Definition of current 45 39 Electron theory of conduction 46 41 Electric current 47 42 Measurement of current 48 43 Measurement of emf 49 44 Electrical resistance. . 50 45 Measurement of wire conductors 51 46 Conductance 52 47 Common conducting materials 53 47 Resistors 54 48 American Wire Gage 55 49 Table of relative resistances and conductances of some common 56 50 materials as compared to annealed copper. Table of specific resistivities 57 50 Wire table 58 51 Heat losses 59 52 Power rating of resistors 60 52 Commercial resistors 61 52 Resistor color code 62 53 Prefixes 63 53 Conversion table 64 55 Circuit symbols 65 55 Summary 66 57 Review questions 67 57 6. OHM'S LAW General 68 58 Ohm's law 69 58 Practical application 70 59 Memory method 71 59 Units of measurement 72 60 Applications 73 60 Summary 74 63 Review questions 75 63 7. PRIMARY CELLS Early experiments and discoveries 76 64 Voltaic pile 77 64 Simple voltaic cell and its parts 78 65 Chemical explanation of cell operation 79 65 Local action 80 66 Internal resistance 81 67 Polarization 82 68 Cells and batteries 83 69 The dry cell 84 69 Terminals 85 71 Voltage and current of dry cells 86 71 Current capacity rating of dry cells 87 72 Testing batteries 88 72 Methods of testing batteries 89 73 Connecting dry cells 90 73 Connecting cells in series 91 73 Connecting cells in parallel 92 74 Improper connections of cells in parallel 93 75 Effects of unequal cell voltages in parallel 94 75 Connecting cells in series-parallel 95 75 Classification of dry batteries in accordance with use 96 76 Summary 97 76 Review questions 98 78 CHAPTER 8. SECONDARY CELLS. General 99 79 Chemical action of lead-acid secondary cells 100 79 Construction of lead-acid storage batteries 101 81 The electrolyte 102 83 The rating of secondary cells - 103 84 Charging of lead-acid batteries 104 84 Testing of lead-acid batteries .105 86 Care of lead-acid batteries . 106 87 The Edison storage battery 107 88 Summary 108 88 Review questions 109 89 9. CIRCUITS. General 110 90 The series circuit 111 90 Rise or fall of potential, voltage drops 112 92 Precautions in handling circuits 113 93 Laws of series circuits 114 94 Simple parallel circuit 115 96 Series-parallel circuit 116 96 Law of parallel circuits 117 96 Combining parallel resistances 118 98 Series-parallel circuits 119 101 Calculations in series-parallel circuit 120 102 Series-parallel circuit problem 121 105 Complex circuits; Kirchhoff's laws 122 106 Circuit tracing 123 106 Summary 124 107 Review questions. 125 108 10. ELECTROMAGNETISM. Oersted's experiment 126 112 A magnetic field is produced by electric current 127 112 Relationship between current and its magnetic field 128 113 Left-hand rule 129 114 Magnetic field between conductors carrying currents 130 115 Magnetic field of a single coil 131 116 Electromagnets 132 117 The magnetic circuit 133 118 Magnetomotive force 134 119 Magnetization curves 135 119 Hysteresis loss 136 120 Relationship of electric and magnetic fields 137 121 Energy in magnetic and electric fields 138 122 Summary 139 123 Review questions 140 123 11. INDUCED ELECTROMOTIVE FORCE Electromagnetic induction due to cutting of magnetic field by a conductor 141 125 Left-hand generator rule 142 125 Electromagnetic induction due to cutting of a conductor by a magnetic field 143 126 Factors determining the magnitude of induced electromagnetic force 144 126 Explanation of electromagnetic induction 145 127 Faraday's law 146 128 Inducing an emf in a neighboring conductor (mutual induetion) 147 129 Summary 148 131 Review questions 149 131 CHAPTER 12. INDUCTANCE Self-induction 150 132 Inductance 151 133 Growth and decay of current in inductive circuits 152 134 Development of high induced voltages when an inductive circuit is completely broken 153 137 Types of inductors 154 137 Mutual inductance 155 139 Factors affecting mutual inductance 156 140 Coupling 157 141 Ignition system 158 142 Inductors in series and parallel 159 142 Summary 160 144 Review questions 161 145 APPENDIX I. APPENDIX I. POWER, WORK, UNITS, AND DIMENSIONS 147 II. CHEMICAL REACTIONS IN LEAD-ACID CELL - 156 III. APPLICATION OF KIRCHHOFF'S LAWS TO THE SOLUTION OF D-C NETWORKS 159 IV. MISCELLANEOUS 179 INDEX 182 Digitized by Google Books.

Search for “TM 11-661 Electrical Fundamentals: Direct Current” downloads:

Visit our Downloads Search page to see if downloads are available.

Find “TM 11-661 Electrical Fundamentals: Direct Current” in Libraries Near You:

Read or borrow “TM 11-661 Electrical Fundamentals: Direct Current” from your local library.

• The WorldCat Libraries Catalog: Find a copy of “TM 11-661 Electrical Fundamentals: Direct Current” at a library near you.