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 6-10 із 86
Сторінка 32
... at different points . In this discussion it is of course assumed that the conductor must always have sufficient current capacity , whether it be tapering or cylindrical . In the next case , Fig . 16 , the 32 ELECTRIC LIGHTING .
... at different points . In this discussion it is of course assumed that the conductor must always have sufficient current capacity , whether it be tapering or cylindrical . In the next case , Fig . 16 , the 32 ELECTRIC LIGHTING .
Сторінка 63
... capacity of the rheostat being sufficient for the maximum current conveyed by the feeder . In operating such a system a certain amount of resistance R is introduced into the circuit of feeder A that is lightly loaded , in order that the ...
... capacity of the rheostat being sufficient for the maximum current conveyed by the feeder . In operating such a system a certain amount of resistance R is introduced into the circuit of feeder A that is lightly loaded , in order that the ...
Сторінка 76
... capacity than the maximum load . But extra expenses for attendance , rent , etc. , are involved at the sub - stations . Three - wire System with Three - brush Dynamo . Fig . 52 indi- cates another three - wire arrangement that can be ...
... capacity than the maximum load . But extra expenses for attendance , rent , etc. , are involved at the sub - stations . Three - wire System with Three - brush Dynamo . Fig . 52 indi- cates another three - wire arrangement that can be ...
Сторінка 78
... capacity of the dynamo D. This is sufficient as long as the sides are fairly well balanced , but is entirely inadequate if the difference becomes great , which may easily occur by accident . The ordinary three - wire arrangement , or ...
... capacity of the dynamo D. This is sufficient as long as the sides are fairly well balanced , but is entirely inadequate if the difference becomes great , which may easily occur by accident . The ordinary three - wire arrangement , or ...
Сторінка 79
... capacity equal to the full load or only a fraction of it . Three - wire System with " Compensators " is represented in Fig . 56 , in which the two auxiliary machines M and N are mechani- cally coupled together , and each generates one ...
... capacity equal to the full load or only a fraction of it . Three - wire System with " Compensators " is represented in Fig . 56 , in which the two auxiliary machines M and N are mechani- cally coupled together , and each generates one ...
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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 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 polyphase systems porcelain practically pressure primary produced reactance regulation represented in Fig resistance rheostat rotary rotary converters secondary circuit secondary coils 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.