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Hysteresis, angle relation to hysteresis loop area. XXV (06) 684

exponent, variation with flux density....XXVIII (09) 455, 458
loop area relation to hysteretic angle of
advance

.XXV (06) 684 from exciting current wave.

..XXV (06) 675 plotted from exciting current wave.. XXIX (10) 844 study

XXIX (10) 896 losses, effect of direction of rolling. ........XXVIII (09) 462

variation with flux density.... XXVIII (09) 455, 458 Ice difficulties, Niagara Falls....

.XXIV (05) 837 troubles, precautions at Niagara Falls.

.XXIV (05) 811 Ilgner electric hoisting system...

XXIX (10) 275 mine hoist, tests.

XXIX (10) 327 Illuminants, comparison different types.

...XX (02) 104 Illumination art, practical side..

.XIX (02) 5 calculation, including reflection..

XX (02) dif ing globe, formula for radius.. XIX (02) effect of wandering arc.....

XIX (02) 33 experimental room, equipment.

...XX (02) 95 indoors, requirements

.XIX (02) 24 industrial plants

XXIX (10) 139 intensity, drafting rooms.

XXIX (10) 143 indoor targets

XXIX (10) 142 machine shop

.xxix (10) 143 railway cars

.XXI (03) 175 intrinsic brilliancy, importance.

.XIX (02) 8 light, steadiness, importance..

.XIX (02) 7 measurement, direct method.

Xx (02)

75 methods of operating illuminants.

XIX (02) 17 outdoor, characteristics of arcs... ...XIX (02) primary standards, general characteristics. ...XIX (02) 14 retinal persistence, value

.xix (020) 7 street, incandescent lamps, advantages. ..XIX (02) 45 minimum intensity

.XIX (02)

38 relation between size and spacing of arc lamps

.XIX (02) small vs. large units.

.XIX (02) study, equipment of room.

.XX (02) units

.XIX (02) 16 visual usefulness, criterion.

.XIX (02) 9 Illinois Central Railway Co. dynamometer car, description..xix (02) 867 Steel Co., Gary Plant (see Gary Plant).

South Chicago power plant, description.XXIV (05) 55 Image conductor, explanation

..XXVIII (09) 1230 Impedance formula, series circuits.

.XXVII (08) 1397 Imperial valley irrigation system.

.XXIX (10) 732 Inaccuracy cost

.XXVIII (09) 1277 Incandescence, theory

....XXV (06) 789 Incandescent lamps (see Lamps). Indiana Union Traction Co. distribution system, tests.....XXII (03) 243

energy consumption, tests....XXII (03) 181 lines, map

XXIV (05) 963 power plant, description.. .XXII (03) 467

plan and ele

vation......XXII (03) 469 service capacity, tests. .XXII (03) transmission and distribution circuits

.XXII (03) 244

20

38 38

95

202

556

Inductance, armatures, a. c., observed...

XXIII (04) 327 winding, calculation

..XXIII (04) 302 cables, armored, formula

XXVIII (09) 764 formulas

XXVIII (09)

764 single-conductor, formula

XXVI (07)

560 parallel wires, formula derivation. ....XXVI (07) measurements

....XXV (06) 720 multiple conductors, formulas.

. XXVIII (09) 678 reactive coils, formula ...

..XXV (06) 888 transmission line, formula. XXIII (04) 663; XXVI (07) 163 theory

.XXIII (04) 661 Induction, alternators, effect of slot shape.

..XXIII (04) 269 electromagnetic, electronic theory.

...XXVI (07) 957 Faraday's law

.XXVII (08) 1341 general law

.XXVII (08) 1352 Hering's unlinking experiment

XXVII (08) 1343 J. J. Thomson's statement of law

.XXVII (08) 1342 Maxwell's statement of law.XXVII (08) 1341 generators (see Generators, a. c. induction). magnetic, parabolic law, derivation..... xxv (06) 707 motors (see Motors). regulator (see Regulator).

watt-hour meter (see Meter, watt-hour). Industries, electrical, distribution of capital in U. S.......XXIX (10) 650 Instability, general definition

.XXVIII (09) 39 Instruments, ammeters (see Ammeters).

equipment New York Edison Co. generators.XXII (03) 431 railway substation

.XXII (03) 246 frequency meter (see Meter). high-tension, electrical properties.

.XIX (02)

219 inaccuracy, cost

XXVIII (09) 1277 jewel pressure in practice.

XXIV (05) 245 power-factor meters (see Power-factor meters). range choice

.....XXIV (05)

243 switchboard, calibration method.

..XVIII (OI) 169 d. c. standardizing in place....XVIII (01) 183 equipment, Niagara Falls plant. XVIII (01) 497 location

XXIV (05) 240, 830 testing telegraph circuits.

XXIX (10) 1333 transformers (see Transformers). various (see name of instrument). voltmeters (see Voltmeters). water-cooled electrodynamometer. xxix (10) 1547 watt-hour meter (see Meters). Weston, characteristics

..XXIV (05) 232 Insulation, 500,000 volts

XXVIII (09) bibliography

.XXIX (10) 1580 breakdown, effect of local heating.

XXIX (10) 1592 cable, cotton-beeswax, experience.

XXVI (07) 597 cotton-dry core, experience.

XXVI (07) 597 dielectric conduction

XIX (02) 1067 effect of duration of charge on capacity.xxix (10) 1612

duration of charge upon insu

lation resistance... XXIX (10) 1610 load on dielectric stress. XXIX (10) 1600

221

Insulation, cable, effect of (continued)

load on specific capacity and
temperature

XXIX (10) 1600
temperature on capacity. XXIX (10) 1613
temperature gradient in equal-
izing dielectric stress..

.....XXIX (10) 1622 temperature on insulation resistance

.XXIX (10) 1611 graded, design curves.

.XXIX (10) 1560 grading formulas

.XXIX (10) 1577 history

.XXIX (10) 1556 methods of distributing potential stresses

..XXIX (10) 1554 paper, capacity, change with temperature

.XXIV (05) 407 disadvantages

.XXVI (07) 603 insulation resistance change with temperature

XXIV (05) 406 temperature, maximum limit. .XXII (03) 420 potential distribution

XXVIII (09) 210 rubber, insulation resistance change

with temperature.... ...XXIV (05) 404

temperature, maximum limit...XXII (03) 420 Russel's grading formulas....

.XXIX (10) 1557 stress distribution, effect of temperature.xxix (10) 1566 thickness used in various high-tension systems

.XXVII (08) 1504 condenser type

.XXVIII (09) 209 dielectric strength

.XXVIII (09) 236 potential distribution. .XXVIII (09) 235

gradient, equations.XXVIII (09) 241 weak spots

XXVIII (09) 221 conductance, effect of stress distribution. ....XXIX (10) 1564 laws

.XXIX (10) 1607 corona phenomena (see Corona). deterioration with number of lightning strokes..XXV (06) 390 dielectric strength, relation to duration of

stress

XXVI (07) 1204 time element

XVIII (01) 423 disruptive stroke tests....

...XXV (06) 379 early experiments on dielectric strength. .XXIX (10) 1608 effect of joint in dielectric circuit..

.XXIK (10) 1585 generators, graded

.XXIX (10) 1593 graded, design curves.

.XXIX (10) 1560 effect of dielectric energy. ....XXIX (10) 1605 formulas

.XXIX (10) 1577 history

.XXIX (10) 1556 Russel's formulas

xxix (10) 1557 ionization theory of solid dielectrics. .XXIX (10) 1582 mechanical action of dielectric stress.

XIX (02) 1069 problem, high-tension lines

.XVIII (01) 367 puncture tests

....XXV (06) 369 rubber cable, insulation resistance tests. XXV (06) 200 puncture tests

XXV (06) 200 choice of potential

........XXV (06) 203 capacity, change with temperature. .XXIV (05) 404 characteristics

XXV (06) 193

as

221

221

Insulation, rubber (continued)

compound qualities, desirable.... XXVI (07) 1009
durability, relation to electrical prop-
erties

.....XXV (06) 209 effect of ozone...

.XVIII (01) 535 elasticity as index of quality.

XXV (06) 221 different qualities, tests. XXV (06) 219 insulation resistance index of quality

...XXV (06) 204, 221 insulation resistance, change with temperature, tests

XXV (06) 217 insulation resistance, change with test e, m. f., tests

.XXV (06) 217, 220 insulation resistances for different sizes of wire, table....

XXV (06) 226 properties, effect of chemical composition

.XXVI (07) 1013 puncture e. m. f. as index of quality..XXV (06) 214,

different qualities. ..XXV (06) 218 resistivity, heat

....XXVI (07) 982 specific capacity as index of quality.....XXV (06)

change with tempera-
ture, tests

.XXV (06) 218 for different sizes of

wire, table... ...XXV (06) 226 specification

..XXV (06) 199, 230 for 30 per

cent. para compound

.XXV (06) 211 temperature coefficient of capacity as index of quality..

xxy (06) 221 temperature coefficient of resistivity as index of quality..

.XXV (06) 221 wire, insulation resistance tests. .XXV (06) 200 puncture tests

XXV (06)

choice of potential. .XXV (06) 203 stress distribution, effect of temperature. .....XXIX (10) 1566 surge tests

..XXV (06) 369 temperature, effect on performance.

..XIX (02) 1050 rise measurement

XIX (02) 1049 transformers, advantages of micanite. ..XXIX (10) 712 condenser type

..XXVIII (09) 220 effect of triple frequency e.m.f., XXIX (10) 860 extra, on end turns, construction

XXVI (07) 1174 graded

..XXIX (10) 1602 reinforcement of end turns. XXVI (07) 1175 weatherproof, life out-of-doors...

.XXII (03) 761 wire, capacity measurement..

.XXVI (07) 999 dielectric loss different types, tests.. XXVI (07) 1005 formula

XXVI (07) 998 gutta percha, breakdown e. m. f.. .XXIV (05) 413 resistance, tests

.XXVI (07) 1005 resistivity, heat

XXVI (07) 982 specific capacity of different types, tests. .XXVI (07) 1005 thickness for various surface stresses, table

xxvi (07) 173

200

Insulators, behavior under lightning conditions.... XXVII (08) 426 brush discharge, effect on insulation quality.

....XXII (03) 356 charge accumulation tests....

XXV (06) 369 distribution of stress, mechanical analogy. XXIX (10) 1587 effect of strains on dielectric strength.. .XXIX (10) 1618 entry, construction, 50,000-volt....

XXII (03) 325 failures, record, Taylor's Falls line.. ; .XXVII (08) 407 glass, relative advantages of lead and potash...XXI (03) 312 heating caused by potential strain...

XXII (03) 354 line, arcing rings, tests..

.xxix (10) 593 cost

.XXIII (04) 544 design for early Niagara line.

..XVIII (01) 514 factors

.XXIII (04) 160 dew test

XXVII (08) 954 dimensions, degree of accuracy.

XXVII (08) 957 dielectric stress distribution..

.XXIII (04) 162 dirt, effect on insulation....

..XXI (03) 316 effect of blast from steam locomotives...XXVII (08) 1620 fog

.XXIX (10) 718 equivalent circuit diagram

XXVII (08) 922 experience

XXIX (10) 573 of Pacific Gas & Electric Co..XXIX (10) 718 factor of safety, choice..

.XXIX (10) 603, 605 glass, electrical tests

.XXI (03) 314 vs. porcelain

.XXI (03) 276 link type

.XXVI (07) 1259 construction

..XXVI (07) 1261 suspension

.XXVI (07) 1267 potential distribution between disks

XXVI (07) 1271 losses at different e. m. f's.

..XXIV (05) 343 classification

..XXVII (08) 927 effect of length of wooden pin...XXVII (08)

vapor product.... XXVII (08) 877 measurement

XXIV (05) 351 under wet and dry conditions....XXVII (08) 880 method of locating broken. XXVI (07) 1320, 1330 porcelain, electrical tests.

..XXI (03) 314 vs. glass ..

.XXI (03) 276 protection (see Lightning). arcing effects

XXIX (10) 593 rings, tests

XXIX (10) 593 overhead grounded wire. XXIX (10) 598

relief gaps, experience. XXIX (10) 581 relief gaps, experience.

.XXIX (10) 581 resistance, ohmic

.XXVII (08) 927 soot, effect on insulation.

XXI (03) 316 steam test

XXVII (08) 954, 957 suspension type, arcing rings.

XXIX (10) 597 testing

.XXVII (08) 945 design

.XXVII (08) 949 experience

..XXI (03) 239 rain gauge, design.

XXVII (08) 948, 954 routine

...XXVII (08) 949 troubles on Ontario Power Co.'s lines...XXIX (10) 578 types used on high-tension...

XXIII (04) 582 nigger-head

XXVIII (09) 247

883.

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