Electric Lighting: A Practical Exposition of the Art, for the Use of Engineers, Students, and Others Interested in the Installation Or Operation of Electrical Plants, Том 2D. Van Nostrand Company, 1901 |
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Результати 1-5 із 44
Сторінка 17
... 1. Series arc lighting . Usually operated at about 10 amperes and 50 volts per ... single lamps replaced by groups in parallel . 5. Direct current converter ... Phase Alternating Current . 15. Low tension incandescent and SERIES SYSTEMS ...
... 1. Series arc lighting . Usually operated at about 10 amperes and 50 volts per ... single lamps replaced by groups in parallel . 5. Direct current converter ... Phase Alternating Current . 15. Low tension incandescent and SERIES SYSTEMS ...
Сторінка 18
... Single Phase Alternating Current . 15. Low tension incandescent and arc lighting without transformers . This corresponds to No. 11. Other alternating current systems similar to Nos . 12 , 13 , and 14 have not been introduced . 16. High ...
... Single Phase Alternating Current . 15. Low tension incandescent and arc lighting without transformers . This corresponds to No. 11. Other alternating current systems similar to Nos . 12 , 13 , and 14 have not been introduced . 16. High ...
Сторінка 97
... single winding may be fed with a direct current , and will give out an alternating current . The ratio be- tween the ... phase alternating currents respectively . The actions of these machines are brought out in a paper by Professor ...
... single winding may be fed with a direct current , and will give out an alternating current . The ratio be- tween the ... phase alternating currents respectively . The actions of these machines are brought out in a paper by Professor ...
Сторінка 111
... single - phase system . The latter , on the other hand , is not desirable when there are a number of motors of anything more than small size , such as fan motors . Hence polyphase systems are used in cases where both lamps and motors ...
... single - phase system . The latter , on the other hand , is not desirable when there are a number of motors of anything more than small size , such as fan motors . Hence polyphase systems are used in cases where both lamps and motors ...
Сторінка 141
... phase current may be regarded as , and in most cases actually consists of , two distinct single - phase currents , flowing in G D AA separate circuits . F 90 ° 180 ° B 270 ° H 360 ° C Fig . 110. Two - Phase Current . 90 % 180 ° There is ...
... phase current may be regarded as , and in most cases actually consists of , two distinct single - phase currents , flowing in G D AA separate circuits . F 90 ° 180 ° B 270 ° H 360 ° C Fig . 110. Two - Phase Current . 90 % 180 ° There is ...
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Electric Lighting: A Practical Exposition of the Art, for the Use of ... Francis Bacon Crocker Попередній перегляд недоступний - 2016 |
Загальні терміни та фрази
alternating current amperes apparatus arc lamps armature arrangement bulb bus bars cable candle-power capacity carbon cent circular mils 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 open arc operation ordinary parallel phase pipe placed pole polyphase porcelain practically pressure primary produced reactance regulation represented in Fig resistance rheostat rotary rotary converters secondary circuit 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 460 - The lower limit is specified for rubber-covered wires to prevent gradual deterioration of the high insulations by the heat of the wires, but not from fear of igniting the insulation. The question of drop is not taken into consideration in the above tables.
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 459 - Must be so placed in wet places that an air space will be left between conductors and pipes in crossing, and the former must be run in such a way that they cannot come in contact with the pipe accidentally. Wires should be run over, rather than under, pipes upon which moisture is likely to gather or which, by leaking, might cause trouble on a circuit.