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 |
З цієї книги
Результати 1-5 із 100
Сторінка 19
... represented , D being the 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 ...
... represented , D being the 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 ...
Сторінка 21
... represented in Fig . 1. The dynamo and lamps may be selected from the various well - known and thoroughly successful forms of constant - current arc - lighting apparatus . The determination of the proper size of wire is not very ...
... represented in Fig . 1. The dynamo and lamps may be selected from the various well - known and thoroughly successful forms of constant - current arc - lighting apparatus . The determination of the proper size of wire is not very ...
Сторінка 22
... represented diagrammatically in Fig . 3 , in which A , B , and C are three commutators connected in series with each other and with the line that supplies a number of lamps , L , L , etc. , in the usual manner . Assuming each armature ...
... represented diagrammatically in Fig . 3 , in which A , B , and C are three commutators connected in series with each other and with the line that supplies a number of lamps , L , L , etc. , in the usual manner . Assuming each armature ...
Сторінка 23
... represented in Fig . 5 : The new Brush system , illustrated in Fig . 6 , differs from the old in the fact that the lamps , L , L , are inserted in the circuit between the commutators A , B , and C , in which case the line con- sists of ...
... represented in Fig . 5 : The new Brush system , illustrated in Fig . 6 , differs from the old in the fact that the lamps , L , L , are inserted in the circuit between the commutators A , B , and C , in which case the line con- sists of ...
Сторінка 25
... represented in Fig . 8. This film obliges the current to pass through the lamp so long as the fil- ament is intact ; but when the latter breaks , the difference of potential rises from its ordinary value of 10 or 20 volts to the full ...
... represented in Fig . 8. This film obliges the current to pass through the lamp so long as the fil- ament is intact ; but when the latter breaks , the difference of potential rises from its ordinary value of 10 or 20 volts to the full ...
Інші видання - Показати все
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.