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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Сторінка
... material , in proof - reading , and in other ways . Finally , thanks are due to the General Electric , Westinghouse , and other companies , which have freely given information and illustrations . CONTENTS . CHAPTER I. ELECTRICAL ...
... material , in proof - reading , and in other ways . Finally , thanks are due to the General Electric , Westinghouse , and other companies , which have freely given information and illustrations . CONTENTS . CHAPTER I. ELECTRICAL ...
Сторінка 3
... Materials for Electrical Conductors . Copper is the material employed almost universally for electrical conductors , on account of its high conductivity . The slight superiority of silver in this respect is more than offset by its ...
... Materials for Electrical Conductors . Copper is the material employed almost universally for electrical conductors , on account of its high conductivity . The slight superiority of silver in this respect is more than offset by its ...
Сторінка 15
... material . The effect of the latter is to increase the surface from which heat is radiated and carried away by convection . In most cases a con- siderable increase in the temperature of a bare wire is not objec- tionable except so far ...
... material . The effect of the latter is to increase the surface from which heat is radiated and carried away by convection . In most cases a con- siderable increase in the temperature of a bare wire is not objec- tionable except so far ...
Сторінка 25
... material interposed between the points P and P connected to the conduc- tors A and B which enter and leave the lamp , as represented in Fig . 8. This film obliges the current to pass through the lamp so long as the fil- ament is intact ...
... material interposed between the points P and P connected to the conduc- tors A and B which enter and leave the lamp , as represented in Fig . 8. This film obliges the current to pass through the lamp so long as the fil- ament is intact ...
Сторінка 77
... material in the generator is not a very serious matter , however ; and this plan of operating a three - wire system would often be a very practical and convenient one for small plants . - There is , however , with this arrangement , the ...
... material in the generator is not a very serious matter , however ; and this plan of operating a three - wire system would often be a very practical and convenient one for small plants . - There is , however , with this arrangement , the ...
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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.