ICS Electrical Handbook Index. 1942
Accumulators, see Storage batteries.
Adjustable-speed motor, 64, 101.
Admittance, 38.
Allowable carrying capacities, 240.
Alnic, 368 and 369.
Alternating-current: circuits; Polyphase, 134.
Alternating-current: circuits; Properties, 132.
Alternating-current: circuits; Relations of R, L, and C, 133.
Alternating-current: circuits; measurements, 350 to 354.
Alternating-current: circuits; motors, 141 to 182, 268 to 274.
Alternating-current: circuits; values, 129.
Alternating currents, 128 to 134.
Alternators, 134 to 141.
Alternators, Parallel operation of, 140 and 203.
Aluminum wire table, 18, 212.
American institute of electrical engineers, 150.
Ampere, 38 and 40.
Ampere, -hour, 108.
Ampere, -turn, 38, 50, and 52.
Angles, Measure of, 2.
Anode, 102 and 194.
Appliances, Inspected, 232.
Arc quencher, 199, 289, 293.
Areas of plane figures, 11.
Armature: coils, 69.
Armature: Diagrams of windings, 77 to 82.
Armature: Drum type, 68.
Armature: faults, 89 to 92.
Armature: heating, 87.
Armature: windings, 68.
Automatic control panels; A-c, 148 and 291 to 301.
Automatic control panels; D-c, 289 to 291.
Autotransformers, 144 to 146, 186, and 327.
Avoirdupois weight, 2.
B, 38 and 53.
Balance, Electrical, 74, 83, and 84.
Ballasts, 327.
Batteries; Charging, 115 to 117.
Batteries; Comparison of, 121.
Batteries; Floating, 116 and 117.
Batteries; Primary, 101.
Batteries; Secondary, 103.
Batteries; Standby, 115.
Batteries; Storage, 103 to 127.
Bearings, Heating of, 87.
Belts, 280 and 287.
Blowers, 283.
Blow-out, 199, 289, and 293.
Board, Panel, 243 and 244.
Boiling point, 336.
Boiling point of water, 7.
Booster, 63.
Brakes, Magnetic, 304.
Braking, Dynamic, 306.
Breaking strengths, 212.
Breathers, 189.
Brightness, 315.
British thermal unit, 6, 331, 332, and 338.
Brush; composition, 60.
Brush; shifting, 85, 86, and 271.
Brush; sparking, 85.
Brush; thickness, 86.
Bucking, 67 and 84.
Building up, 67.
Cables; Armored, 229 and 259.
Cables; Distribution, 229 to 231.
Cables; Non-metal sheath, 260.
Cables; Transmission, 216 to 219.
Calibration of instruments; A-c, 351.
Calibration of instruments; D-c, 348.
Calorie, 6 and 331.
Candlepower, 313.
Capacitance, 45, 46, 133.
Capacitor, 45 to 47.
Capacitor, motors, 274.
Capacitor, Synchronous, 270.
Capacity; Carrying, 240.
Capacity; Thermal, 331 and 332.
Cathode, 101, 102, 194, 370.
Cells: Capacity of, 108 and 124.
Cells: Chemistry of; lead, 104.
Cells: Chemistry of; iron, 122.
Cells: Dry, 102.
Cells: Nickel-iron, 121 to 127.
Cells: Lead-acid, 103 to 121.
Cells: Pilot, 111.
Cells: Voltage of; lead, 108 and 109.
Cells: Voltage of; iron, 124 and 125.
Cells: Wet, 102.
Centigrade system, 6, 7.
Centimeter-gram-second system, 39.
Centrifugal force, 13.
Cgs system, 39 and 53.
Chain drives, 287.
Choice of motor, 274 to 277, and 285.
Circles, 11.
Circuit breakers; Air-blast, 199.
Circuit breakers; Oil, 204.
Circuit breakers; Wiring-circuit, 236, 242, and 243.
Circuits; A-c, 132 and 133.
Circuits; Electric, 42 to 45.
Circuits; Magnetic, 51 to 53.
Circular mil, 14.
Circumferences, 11.
Classification of insulating materials, 149.
Clutches, 286.
Code, National electrical, 231, 232, 250, and 252.
Coefficient, Temperature, 43, 44, and 212.
Coils; Armature, 69.
Coils; Designation by insulation, 150.
Coils; Designation by slots, 156.
Coils; Field, 152.
Coils; Formed, 71, 159 to 162, and 166 to 169.
Coils; Insulation and treatment of stator, 168.
Coils; Left-hand, 169.
Coils; Mush, -159 to 161, 165, and 166.
Coils; Open-slot, 157 and 167.
Coils; Partly-closed-slot, 156 and 157.
Coils; per group, 161.
Coils; Pitch of, 70 and 163.
Coils; Right-hand, 169.
Coils; Rotor, 151.
Coils; Shading, 292, 365, 366.
Coils; Shape, 71, 159 to 162, and 166 to 169.
Coils; Shuttle-pulled, 167.
Coils; Stator, 151.
Coils; Throw, 158 and 159.
Coils; See also Windings.
Commutation, 71 and 84.
Commutator, 85 to 87.
Commutator, pitch, 83.
Compound motors, 65, 66.
Compressors, 283.
Condenser, see Capacitor.
Conductance, 38, 40, 41.
Conduction, 337.
Conductivity; Electrical, 44 and 212.
Conductivity; Thermal, 337.
Conductors; Carrying capacity, 204.
Conductors; Insulation of, 237 to 239.
Conductors; Line, 211.
Conductors; Sizes of, for motors, 30 to 32.
Conductors; Terms for, 167 and 169.
Conduit; Rigid, 255 to 258.
Conduit; sizes, 256.
Conduit; Underground, 229.
Connecting; diagrams and tables, 173 and 179 to 181.
Connecting; windings, 170 to 180.
Connections; Mechanical, 212, 228, and 286 to 289.
Connections; Solderless, 212 and 228.
Connections; Stub, 166.
Connections; See also Joints, Delta, and Star.
Contactors; A-c, 291.
Contactors; D-c, 289.
Control; Light, 319.
Control; Motor; A-c, 144 to 148, and 291 to 294.
Control; Motor; A-c and d-c, 294 to 309.
Control; Motor; D-c, 98 to 101, and 289 to 291.
Control; Pilot, 208 and 301 to 308.
Control; Push-button, 307.
Control; Remote and 2-point, 244 and 245.
Control; Temperature, 201, 202, 344, and 345.
Construction of d-c machines, 58 to 60.
Convection, 338 and 339.
Conversion table, Metric and English, 5, 6.
Copper; strap, 24 to 27.
Copper; wire tables, 16 to 23 and 212.
Cores, Preparing, 163, 171.
Correction of faults; A-c machines, 149 to 182.
Correction of faults; D-c machines, 85 to 92.
Cosines, Natural, 8 to 10.
Cost of; lighting, 322 and 324.
Cost of; poor lighting, 311, 321, 322, and 324.
Cotton-covered wire, 16, 17.
Coulomb, 39 to 42.
Counter emf, 59, 96, 102.
Couplings, 286.
Cranes, 281.
Cubic measure; English, 2.
Cubic measure; Metric, 4.
Currents; Alternating, 128 to 132.
Currents; Direct, 41. to 43.
Currents; Eddy, 54, 55, and 360.
Currents; Exciting, 184.
Currents; Lagging, 129.
Currents; Leading, 129.
Currents; Motor, 28 and 29.
Cycle, 128.
Cylinder, 12.
Deion extinguisher, 293.
Delta connection; Alternators, 139.
Delta connection; Circuits, 234.
Delta connection; Open, 191 and 192.
Delta connection; Rotors, 177 to 180.
Delta connection; Stators, 170 to 174.
Delta connection; Transformers, 191, 192, 222, and 223.
Depolarizer, 102 and 103.
Designating coils by; insulation, 150 to 152.
Designating coils by; slots, 156.
Diagrams of windings; Armature, 72, 75, 77, 81.
Diagrams of windings; Connecting, 171 to 180.
Diagrams of windings; Parallel, 77.
Diagrams of windings; Rotor, 176 to 181.
Diagrams of windings; Series, 81.
Diagrams of windings; Starting, 158 and 159.
Diagrams of windings; Stator, 170 to 174.
Diagrams of windings; Working, 179 and 180.
Dielectrics, 38, 47 to 49.
Dimensions, areas, and resistances of round copper wire, 16, 17.
Direct-current; armature windings, 68-85.
Direct-current; machines, 58 to 101.
Direct-current; measurements, 347 to 350.
Direct-current; motors, 60 to 101, and 265 to 268.
Direction of; current and motion, 57.
Direction of; rotation; A-c motors, 143.
Direction of; rotation; D-c generators, 68.
Direction of; rotation; D-c motors, 98.
Display lighting, 330.
Distribution; Electric, 221 to 231.
Distribution; center, 233, 243, and 244.
Distribution; curves for lighting units, 320, 326, 328, and 329.
Double cotton-covered; ribbon and square wire, 19 to 23.
Double cotton-covered; round wire, 16 and 17.
Drives; Electrical, 262, 272, 273.
Drives; Mechanical, 262 to 265, 272, 273, and 276.
Drum; armature, 68 and 69.
Drum; controllers, 148.
Drum; windings, 77.
Dry cells, 102.
Dry-disk rectifiers, 195.
Dry measure; English, 2.
Dry measure; Metric, 4 and 5.
Ducts, 229.
Dynamic braking, 306.
Eddy currents, 54, 55, and 360.
Edison cell, 121 to 127.
Electric; batteries, 101 to 127.
Electric; circuits, 42 and 43.
Electric; furnaces, 346.
Electric; heating, 331 to 345.
Electric; illumination; Exterior, 327 to 331.
Electric; illumination; Interior, 323 to 327.
Electric; wiring, 231 to 262.
Electric; wiring, Cable, 259 and 260.
Electric; wiring, Conduit, 255 to 259.
Electric; wiring, diagrams, 248 and 249.
Electric; wiring, Finished buildings, 251 and 252.
Electric; wiring, Knob-and-tube, 252 and 253.
Electric; wiring, layout, 247 to 252.
Electric; wiring, Metallic-tubing, 258.
Electric; wiring, Molding, 253 and 254.
Electric; wiring, Overhead service, 234 and 235.
Electric; wiring, rules, 231 to 233.
Electric; wiring, systems, 252 to 260.
Electric; wiring, terms, 233.
Electric; wiring, Underground service, 236.
Electric; wiring, Unfinished buildings, 247 to 251.
Electrical: equipment, 196 to 204.
Electrical: measurements, 347 to 358.
Electrical: potential or pressure, 41.
Electrical: sheets, 52, 54, and 360.
Electrical: symbols; Graphic, 33 to 37, 233, and 249.
Electrical: symbols; Letter, 38 and 39.
Electrical: symbols; Relay, 37.
Electrical: units, 39 to 41.
Electricity, 39 to 49.
Electrolyte, 102 to 105, 110, 118 to 125, and 127.
Electromagnetic; induction, 55 and 56.
Electromagnetic; units, 39.
Electromagnetism, 49 to 58.
Electromagnets, 358 to 368.
Electromagnets, A-C; clapper, 359, 360, 367.
Electromagnets, A-C; E-type, 361 and 367.
Electromagnets, A-C; Pull of, 364 to 368.
Electromagnets, A-C; Selection of, 366 to 368.
Electromagnets, A-C; solenoid, 361 to 363, 367.
Electromagnets, Applications, 363.
Electromagnets, D-c; clapper, 358 and 359.
Electromagnets, D-c; Lifting, 360.
Electromotive force, 41.
Electromotive force, Counter, 59, 96, and 102.
Electrons, 41.
Electroplating, 369 and 370.
Electrostatic units, 39.
Elevators, 280 and 281.
Ellipse, 12.
Enameled wire, 16 and 17.
Energy; Radiant, 309 to 311.
Energy; Spectral, 310 and 311.
English weights and measures, 1 to 4.
Equalizer; bus, 95.
Equalizer; rings, 72 and 83.
Exciting current, 184.
Exciters, 61, 134, 137, 198.
Exhausters, 283.
Exterior lighting, 327 to 331.
Fahrenheit system, 6, 7.
Falling bodies, 12.
Fans, 283.
Farad, 38 and 46 to 47.
Fault protection, 197 and 207 to 211.
Faults: Armature, 89 to 92.
Faults: Correction of; A-c, 149 to 182.
Faults: Correction of; D-c, 85 to 87.
Faults: Field, 88 and 89.
Faults: Locating, 88.
Faults: Tests for, 175 and 179.
Field; excitation, 60 and 62.
Field; Heating of, 87.
Field; rheostat, 62.
Floodlighting, 328 to 330.
Fluorescent lamp, 311, 325, and 326.
Flux density, 38, 52, 53.
Foot-candle, 314.
Foot-candle, levels, 323, 324, 328, 330.
Foot-lambert, 315.
Forces, Parallelogram, 13.
Frequency, 128 and 137.
Full-load motor currents, 28 and 29.
Furnaces, 346.
Furring, 249.
Fuse protection, 30 to 32.
Fuses, 241 and 242.
Fusion, 333 and 334.
Gages, 14 and 15.
Galvanizing, 370.
Gauss, 38, 50, and 52.
Gears, 288.
Generation of heat, 340 to 342.
Generators: in parallel; A-c, 140 and 203.
Generators: in parallel; D-c, 93.
Generators: Separately excited, 61.
Gilbert, 38 and 50.
Glare, 321.
Graphic electrical symbols, 33 to 37, 233, and 249.
Ground; see Faults. Grounding;
Ground; of conduit, 257.
Ground; of motors, 261.
Growler, 90 and 91.
H, 38 and 53.
Heat; flow, 336 to 340.
Heat; generation, 340 to 342.
Heat; Latent, of; fusion, 333.
Heat; Latent, of; vaporization, 334.
Heat; Specific, 332.
Heat; unit, 6, 331, and 338.
Heating; Armature, bearings, and field, 87.
Heating; Direct, induction, and radiant, 343 to 345.
Heating; Electric, 331 to 345. Infra-red, 343.
Heating; Resistor, 340.
Henry, 38, 55, and 56.
Hoists, 281.
Horsepower, 41.
Hydrometer, 112.
Hysteresis, 53, 54, and 360.
Illumination, 309 to 331.
Illumination, Cost of, 322 and 324.
Illumination, Cost of poor, 311, 321, 322, and 324.
Illumination, Exterior, 327 to 331.
Illumination, Interior, 323 to 327.
Illumination, levels, 323, 328, and 330.
Illumination, quality, 321.
Illumination, systems, 320 and 321.
Illumination, units, 313 to 315, 320, 321, and 326.
Illumination, See also Lighting.
Impedance, 38, 130, 133, 134.
Incandescent lamp, 311, 325.
Inductance, 38, 55, 133.
Induction, 55 and 56.
Induction, heating, 343.
Induction, motors, 142 to 148.
Inductivity, 47 and 48.
Industrial motor; applications, 262, 272, 277.
Industrial motor; control, 289 to 309.
Infra-red heating, 343.
Inspected appliances, 232.
Instruments; see Measurements.
Insulating materials, 149.
Insulation; Binder, 155.
Insulation; classification, 149.
Insulation; Conductor, 153, 237 to 239.
Insulation; Ground, 154.
Insulation; Phase, 157 and 179.
Insulation; resistance, 89 and 350.
Insulation; Slot, 162.
Insulation; Stator, 168 and 169.
Insulators, 213 to 215, 227, and 228.
Interior lighting, 323 to 327.
Interlocks, 301.
International electrotechnical commission, 40.
Interpole motors, 60.
Invar, 296 and 297.
Ions, 51 and 293.
Iron losses, 53 to 55 and 360.
Joints, 166, 212, 217, 228, and 237 to 241.
Joule, 6, 38, and 40 to 42.
Kilo-, 4.
Kilowatt-hour, 39 to 41.
Lagging current, 129.
Laminations, 52, 55, 360.
Lamps; Comparison of, 325, 326.
Lamps; Major divisions, 309.
Lamps; Spectral energy, 310, 311.
Lap winding, 85, 173, and 177; see also Parallel windings.
Latent heats, 333 and 334.
Lead-acid cell, 104 to 121.
Leading current, 129.
Length., Measures of; English, 1.
Length., Measures of; Metric, 4.
Letter symbols, 38 and 39.
Lifting magnet, 360, 361.
Light; Amount of, 323, 324, 328, and 330.
Light; control, 319.
Light; modification, 316 to 319.
Light; Quality of, 321.
Lighting; 309 to 331.
Lighting; Cost of, 322 and 324.
Lighting; Cost of poor, 311, 321, 322, and 324.
Lighting; Display, 330.
Lighting; Exterior, 327 to 331.
Lighting; Flood, 328 to .330.
Lighting; Interior, 323 to 327.
Lighting; Sign, 330.
Lighting; systems, 320.
Lighting; units, 313 to 315, 320, 321, and 326.
Line conductors, 211.
Linear measure; English, 1.
Linear measure; Metric, 4.
Liquid measure; English, 3.
Liquid measure; Metric, 5;
Load; curve, 367.
Load; factor, 276 and 277.
Loading rheostats, 92.
Location of instruments, 355.
Losses, Iron, 53 to 55 and 360.
Lumen, 313.
Luminaires, 320, 321, 326.
Machine tools, 277.
Machines; D-c, 58 to 101.
Machines; Separately excited 61.
Magnetic; brakes, 304.
Magnetic; blow-out, 199, 289, 293.
Magnetic; circuits, 51.
Magnetic; control, 304.
Magnetic; flux density, 38 and materials, 51.
Magnetic; symbols, 38 and 39.
Magnetic; units, 49.
Magnetism; and electromagnetism, 49 to 58.
Magnetism; Residual, 53 and 67.
Magnetizing force, 38, 50, and 52.
Magneto, 369.
Magnetomotive force, 38, 49, 50, 52, 60, and 67.
Magnets; Electro-, 358 to 369.
Magnets; Lifting, 360.
Magnets; Permanent, 368, 369.
Manholes; 229.
Master switches, 302.
Materials, Properties of, 43.
Maxwell, 38, 50, and 52.
Measure; Cubic, 2 and 4.
Measure; Dry, 2, 4, and 5.
Measure; Linear, 1 and 4.
Measure; Liquid, 3 and 5.
Measure; Square, 1 and 4.
Measure; Weight, 2 and 5.
Measurements; A-c, 350 to 354.
Measurements; D-c, 347 to 350.
Measurements; Polyphase, 353.
Measurements; Single-phase, 350.
Measurements; Time, 356 to 358.
Measurements; Typical, 354.
Mechanical: connections, 212, 228, and 286 to 289.
Mechanical: repairs; A-c motors, 149 to 182.
Mechanical: repairs; D-c machines, 85 to 92.
Mechanical: repairs; Rotors, 174 to 182.
Mechanical: repairs; Stators, 149 to 174.
Mechanics, 12 and 13.
Meg-, mega-, 4.
Megger, 350.
Melting point, 212 and 334.
Melting point, of ice, 7.
Mensuration, 11 and 12.
Mercury-arc rectifiers, 193 to 195.
Mercury-vapor lamp, 325 and 326.
Metal spraying, 174, 175, and 370.
Meter, Visibility, 324.
Meters, installation of, 236; see also Measurements.
Metric weights and measures, 4 to 6.
Mho, 38 to 40.
Mica, 86.
Micro-, 4.
Mil and circular mil, 14.
Milli-, 4.
Miscellaneous table, 3.
Modification of light, 316 to 319.
Motor: Adjustable-speed, 64, 101.
Motor: applications, 262, 272, 277.
Motor: characteristics; A-c, 268 to 274.
Motor: characteristics; D-c, 63 to 66 and 265 to 272.
Motor: control; A-c, 144 to 148 and 291 to 294.
Motor: control; D-c, 98 to 101 and 289 to 291.
Motor: currents, 28 and 29.
Motor: drives, 262, 272, and 273.
Motor: operation, 304.
Motor: power supply, 265.
Motor: protection, 30 to 32.
Motor: repair; A-c, 149 to 182.
Motor: repair; D-c, 85 to 92.
Motor: Starting; A-c 141 to 148.
Motor: Starting; D-c, 96 to 98.
Motor: wiring, 30 to 32 and 261.
Motors: A-C, 141 to 182 and 268 to 274.
Motors: Choice of, 274 to 277 and 285.
Motors: D-c, 60 to 101 and 265 to 268.
Motors: for; blowers, 283.
Motors: for; car dumpers, 66.
Motors: for; compressors, 66, 283.
Motors: for; cranes, 281.
Motors: for; elevators, 280.
Motors: for; exhausters, 283.
Motors: for; fans, 283.
Motors; for; hoists, 66 and 281.
Motors; for; machine tools, 277 279.
Motors; for; pumps, 66 and 282.
Motors; for; valve operation, 66.
Motors; for; winches, 66.
Motors; for; woodworking equiment, 279.
Motors; for; Power factor, 144.
Motors; for; Separately excited,
Multiplex windings; Parallel, 74.
Multiplex windings; Series, 77.
Multivoltage control, Mutual inductance, 56.
National board of fire underwriters, 231.
National electrical code, 231, 232, 250, and 252.
National electrical manufacturers association, 150 and 276.
Natural sines and cosines, 8 to 10.
Nickel-iron cell, 121 to 127.
Numbering winding parts, 170 to 174.
Numbers, Useful, 12.
Numerical expression of quantities; Electrical, 45.
Numerical expression of quantities; Magnetic, 55 and 56.
Oersted, 38 and 50.
Ohm; Electrical, 38 to 40.
Ohm; Thermal, 338.
Ohm's law, 42.
Open delta, 191 and 192.
Operation of; equipment, 200 to 204.
Operation of; magnetic controls, 304 to 309.
Outlets, 250, 251, and 325.
Overcurrent protection for motors, 30 to 32.
Panel board, 243 and 244.
Parallel operation of; Alternators, 140, 203.
Parallel operation of; D-c generators, 93.
Parallel operation of; circuits, 42 and 46.
Parallel operation of; windings and diagrams, 71 to 81, 170 to 174.
Parallelogram of forces, 13.
Perimeters, 11.
Permanent magnets, 368 and 369.
Permeance, 50 and 51.
Permeability, 39, 53, 369.
Permittivity, 39 and 47.
Phanotron, 195.
Phase relations, 129.
Pilot; cell, 111.
Pilot; control, 208, 301, 307.
Pitch; Back, 83 and 180.
Pitch; Chorded, 137 and 163.
Pitch; Coil, 70, 158, 159, 163, 177, 178, and 182.
Pitch; Commutator, 83.
Pitch; Connecting, 77.
Pitch; Fractional, 137 and 163.
Pitch; Front, 83 and 181.
Pitch; Short, 180 and 182.
Pitch; Winding, 83 and 182.
Plane figures, 11.
Plating, 369 and 370.
Plugging, #307.
Polarity, 60, 74, 114, 203.
Polarization, 102 and 319.
Pole: Concrete, 216.
Pole: Distribution, 226 and 227.
Pole: -phase group, 161.
Pole: shading, 365 and 366.
Pole: Steel, .215 and 216.
Pole: Wood, 215 and 226.
Pole: See also the equipment concerned.
Polygons, 11.
Polyphase; alternators, 134 to 141.
Polyphase; circuits, 134.
Polyphase; motors, 142 to 148.
Potential, Electrical, 41.
Pothead, 218.
Power, 39 and 42.
Power, factor; Circuits, 131 and 133.
Power factor, Induction motors, 143 and 144.
Power plants, 196 to 204.
Power supply, 265.
Practical electrical units, 39.
Primary batteries, 101 to 103.
Properties of materials, 43.
Protection; Fault, 197 and 207 to 211.
Protection; Fire, 196 and 197.
Protection; for motors, 30 to 32.
Protective relays, 197, 198, and 207 to 211.
Pull curve, 367.
Pumps, 282.
Puncturing voltage, 49.
Push-button control, 307.
Radiant energy, 309 to 311 and 343.
Radiation, 339 and 343.
Reactance, 39 and 130 to 133.
Reactors, 193 and 327.
Recording instruments, 356.
Records and tests, 182.
Rectifiers; Dry-disk, 195.
Rectifiers; Mercury-arc, 193 to 195.
Reflection, 318 and 319.
Refractories, 335 and 346.
Regulation of motors: A-c, 144 to 148 and 303.
Regulation of motors: D-c, 98 to 100 and 303.
Regulators, Voltage, 198.
Relations of R, L, and C in a-c circuits, 133.
Relay; protection, 197, 198, and 207 to 211.
Relay; symbols, 37.
Relays; Current, 300.
Relays; Miscellaneous, 300.
Relays; Overload, 294.
Relays; Protective, 197, 198, and 207 to 211.
Relays; Reverse-current, 226.
Relays; Thermal, 295, 298, and 299.
Relays; Timing, 299.
Release, Undervoltage, 97, 145, 146, 304, and 305.
Reluctance, 30, and 49 to 51.
Remote control, 208, 244, 245, 301, and 307.
Repair of; a-c motors, 149 to 182.
Repair of; d-c motors, 85 to 92.
Repair of; rotors, 174 to 182.
Repair of; stators, 149 to 174.
Repulsion motor, 271.
Requirements, Winding, 76.
Residual magnetism, 53 and 67.
Resistance, 39 and 42.
Resistance, Insulation, 89 and 350.
Resistance, inductance, and capacitance relations, 133.
Resistance, Aluminum wire, 18, 212.
Resistance, Copper ribbon and square wire, 19 to 23.
Resistance, Round copper wire; 16 to 18 and 212.
Resistivities and temperature coefficients, 44.
Resistivity; Electrical, 43 and 44.
Resistivity; Thermal, 338.
Resistors, 42, 303, and 340 to 343.
Resistors, Field-discharge, 303.
Reversal of: direction of rotation; A-c motors, 143.
Reversal of: direction of rotation; D-c generators, 68.
Reversal of: direction of rotation; D-c motors, 98.
Reversal of: emf, 63 and 73.
Reversal of: residual magnetism, 67.
Rheostats; Field, 61, 62, 94, and 95.
Rheostats; Loading, 92.
Rheostats; Starting, 96, 141, 144, 146.
Rings; Equalizer, 72 and 83.
Rings; Geometrical, 11,
Rings; Tie, 173.
Ropes, 287.
Rotation, Direction of: A-c motors, 143.
Rotation, Direction of: D-c generators, 68.
Rotation, Direction of: D-c motors, 98.
Rotors; Definite-wound, 177, 179.
Rotors; Lap-wound, 177. .
Rotors; Phase-Wound, 177 and 179.
Rotors; Repair of, 174 to 182.
Rotors; Squirrel-cage, 175.
Rotors; Wave-wound, 179.
Rules; Code, 231 and 232.
Rules; for direction of current, 57.
Saturation curve, 53.
Secondary batteries, 103 to 127.
Separately excited machines, 61, 137, and 198.
Separators, 107.
Sectionalizing, 207.
Series; circuits, 42 and 46.
Series; motors, 63.
Series; windings and diagrams, 74, 77, 81, 170 to 174.
Shading, 292, 365, and 366,
Sheet-metal gages, 14, 15.
Sheets, Electrical, 52, 54, and 360.
Sherardizing, 370.
Shunt motors, 63 and 64.
Sight, 311.
Sign lighting, 330.
Signal wiring, 262.
Simplex windings; Parallel, 71 to 74.
Simplex windings; Series, 74 to 77.
Sine wave, 128 and 129.
Sines and cosines, 8 to 10.
Single cotton-covered wire, 16 and 17.
Slots; Open, 167.
Slots; Partly closed, 157.
Slots; per pole per phase, 178 to 180.
Soft copper strap, 24 to 27.
Solids, Geometrical, 12.
Solutions, Plating, 370.
Sparking, 84 and 85.
Specific; gravity of electrolyte, 110 and 118 to 120.
Specific; heat, 332 and 333.
Specific; inductive capacity, 39, 47.
Specific; weights, 332.
Spectral energy, 310, 311.
Spectrum, 310.
Speed control of motors: A-c, 144 to 148 and 303.
Speed control of motors; D-c, 98 to 100 and 303.
Sphere, 12.
SPP, 178 to 180.
Spraying metal, 174, 175, and 370.
Square measure; English, 1.
Square measure; Metric, 4.
Squirrel-cage motors, 175.
Standard insulating materials, 149.
Standard points, 7.
Standby battery, 115.
Star connection; Alternators, 139.
Star connection; Circuits, 222, 223, and 234.
Star connection; Rotors, 177 to 180.
Star connection; Stators, 170 to 174.
Star connection; Transformers, 191, 192, 222, and 223.
Starters; D-c, 96 to 98.
Starters; Phase-wound, 146 to 148.
Starters; Squirrel-cage, 144 to 146.
Starters; Synchronous, 141.
Starting winding, 158, 159.
Stator; connections, 170 to 174.
Stator; Designation of coils, 156 and 157.
Stator; insulation, 149 to 156 and 168.
Stator; repair of, 149 to 174.
Stator; slots; Open, 167 to 174.
Stator; slots; Partly closed, 157 to 167.
Steel wire, 212.
Storage batteries, 103 to 127.
Strength of conductor material, 212.
Substations, 206. Sulphation, 121.
Super synchronous motor, 270.
Surface, Metric measures of, 4.
Switches; Master, 302.
Switches; Pilot, 301, 302, and 307.
Switches; Push-button, 307.
Symbols: Electrical; Graphic, 33 to 37, 233 and 249.
Symbols: Electrical; Letter, 38 and 39.
Symbols: Relay, 37.
Symbols: Magnetic, 38 and 39.
Synchronous; capacitor, 141.
Synchronous; motor, 141 and 270.
System; Centimeter-gram-second,39.
System; Metric, 4.
Temperature, 331.
Temperature, coefficient, 43 and 44.
Temperature, control, 201, 202, 344, 345.
Temperature, detectors, 201 and 202.
Temperature, of transformer oil, 202.
Tensile strength of conductor material, 212.
Terms for; conductors, 167 and 169.
Terms for; substations. 206.
Terms for; windings, 156 and 169.
Terms for; wiring, 233.
Tests; A-c machines, 175, 179, and 182.
Tests; D-c machines, 88 to 92.
Tests; Meters, 357.
Tests; Wiring, 261.
Thermal; capacity, 331 and 332.
Thermal; conductivity, 337.
Thermal; relays, 295, 298, and 299.
Thermal; resistivity, 338.
Thermal; unit, 6, 331, and 338.
Thermometer systems, 6-7.
Thermostat, 236, 295, 344.
Three-phase, see Polyphase.
Thyratron, 195.
Thyrite resistors, 303.
Tie rings, 173.
Tools; Machine, 277 to 279.
Tools; Winding, 163 to 165.
Tools; Wiring, 245 to 247..
Tools; Woodworking, 279.
Torque, 63 to 66.
Towers, 214.
Transfer of heat, 336 to 340.
Transformer oil, 202.
Transformers, 183 to 193.
Transmission, 204 to 221.
Treatment for coils, 168.
Triangles, 11.
Trickle charge, 116 to 117.
Troy weight, 2.
Two-phase, see Polyphase.
Types of d-c motors, 60.
Undervoltage release, 97, 145, 146, 304, and 305.
Underwriters' laboratories, 232.
Units; Capacitance, 46.
Units; Centimeter-gram-second, 39.
Units; Electrical, 39 to 41, 108.
Units; Electromagnetic, 39.
Units; Electrostatic, 39.
Units; Heat, 6, 331, and 338.
Units; Illumination, 313 to 315, 320, 321, and 326.
Units; Inductance, 55 and 56.
Units; Magnetic, 49 to 53.
Units; Power, 40 and 42.
Units; Work, 40 and 42.
Useful numbers, 12.