Distributing system and lampsD. Van Nostrand, 1901 - 505 стор. |
З цієї книги
Результати 1-5 із 87
Сторінка 1
... dynamos combined . Substantially the same principles apply to all branches of elec- trical transmission and distribution , including electric lighting and power , telegraphy , telephony , etc. But the subject has been de- veloped more ...
... dynamos combined . Substantially the same principles apply to all branches of elec- trical transmission and distribution , including electric lighting and power , telegraphy , telephony , etc. But the subject has been de- veloped more ...
Сторінка 17
... dynamos in series , lamps supplied by secondary circuits . Alternating Current . 6 , 7 , 8 , 9 , and 10. Alternating current systems corresponding to Nos . 1 , 2 , 3 , 4 , and 5 . PARALLEL SYSTEMS . Constant Potential . Current varies ...
... dynamos in series , lamps supplied by secondary circuits . Alternating Current . 6 , 7 , 8 , 9 , and 10. Alternating current systems corresponding to Nos . 1 , 2 , 3 , 4 , and 5 . PARALLEL SYSTEMS . Constant Potential . Current varies ...
Сторінка 18
... dynamo , D , passes first through + W Fig . 1 . Series Arc Circuit . - one lamp , L , and then through another , and so on , finally returning to the terminal of the dynamo , as shown in Fig . 1. In such cases the current is usually ...
... dynamo , D , passes first through + W Fig . 1 . Series Arc Circuit . - one lamp , L , and then through another , and so on , finally returning to the terminal of the dynamo , as shown in Fig . 1. In such cases the current is usually ...
Сторінка 19
... dynamo and L , L , L , the lamps , connected in series . The total difference of potential generated by the dynamo is assumed to be 1,000 volts , measured between the two brushes marked + and − . This potential falls as the current ...
... dynamo and L , L , L , the lamps , connected in series . The total difference of potential generated by the dynamo is assumed to be 1,000 volts , measured between the two brushes marked + and − . This potential falls as the current ...
Сторінка 21
... dynamo so that it will automatically generate a nearly constant current . The various dynamos used in series arc - lighting , such as the Brush , Thomson- Houston , and Wood machines , are well - known examples of this type of generator ...
... dynamo so that it will automatically generate a nearly constant current . The various dynamos used in series arc - lighting , such as the Brush , Thomson- Houston , and Wood machines , are well - known examples of this type of generator ...
Інші видання - Показати все
Загальні терміни та фрази
alternating current amperes apparatus arc lamps armature arrangement bulb bus bars cable candle-power capacity carbon cent conductors conduit connected constant current constant potential copper loss core cross-arm cross-section cut-out device diameter difference direct current distribution drop dynamo effect efficiency electric lighting electrical conductors employed energy equal fact feeders feeding-points filament flow frequency full load fuse globe ground heat hence incandescent lamps inch inclosed arc increase inductance insulation iron joint latter length less machines magnetic maximum mechanical metal meter method motor number of lamps ohms one-half operation ordinary parallel phase pipe placed pole polyphase porcelain power factor practically pressure primary produced reactance regulation represented in Fig resistance rheostat rotary rotary converters secondary circuit secondary coils self-induction shown in Fig shunt side single-phase socket supplied switch temperature terminal three-phase three-wire system tion transformers tube two-phase two-wire two-wire circuit usually voltage volts wattmeter watts winding
Популярні уривки
Сторінка 11 - W, we find that the most economical area of conductor is that for which the annual cost of energy wasted is equal to the annual interest on that portion of the capital outlay which can be considered to be proportional to the weight of metal used. Professor George Forbes, in his Cantor Lecture, on " The Distribution of Electricity...
Сторінка 496 - If the manner in which the variation in potential, current, speed, etc., between full load and no load is not specified, it should be assumed to be a simple linear relation ; ie, undergoing uniform variation between full load and no load. The regulation of an apparatus may, therefore, differ according to its qualification for use. Thus the regulation of a compound-wound generator specified as a constant-potential generator will be different from that it possesses when specified as an over-compounded...