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 63
Сторінка 22
... windings , connected to a corresponding number of commutators . The cir- cuit leads through these windings in series , so that the construc- tion may be regarded as equivalent to several armatures in series . P + 3000 C 2000 A B0 OXL ...
... windings , connected to a corresponding number of commutators . The cir- cuit leads through these windings in series , so that the construc- tion may be regarded as equivalent to several armatures in series . P + 3000 C 2000 A B0 OXL ...
Сторінка 23
... windings is consumed by the lamps L +1000 A B Fig . 6 . A -1000 Fig . 7 . Figs . 6 and 7. New Arrangement of Brush Arc Lighting System . - between it and the next armature winding , so that the potential does not rise above + 1,000 ...
... windings is consumed by the lamps L +1000 A B Fig . 6 . A -1000 Fig . 7 . Figs . 6 and 7. New Arrangement of Brush Arc Lighting System . - between it and the next armature winding , so that the potential does not rise above + 1,000 ...
Сторінка 58
... winding . This would necessitate the running of special pressure wires to some distance , which may be avoided by provid- ing the relay solenoid , A , with a series coil in addition to the shunt coil , or , in short , by compounding the ...
... winding . This would necessitate the running of special pressure wires to some distance , which may be avoided by provid- ing the relay solenoid , A , with a series coil in addition to the shunt coil , or , in short , by compounding the ...
Сторінка 59
... winding , which is likely to occur if the mag- netism be suddenly discharged . The disadvantages of this method are the slowness with which the dynamo builds up its own field , and the possibility that it may entirely fail to generate ...
... winding , which is likely to occur if the mag- netism be suddenly discharged . The disadvantages of this method are the slowness with which the dynamo builds up its own field , and the possibility that it may entirely fail to generate ...
Сторінка 61
... winding , or by an automatic regulator , as already described . In large systems of distribution the various feeders ( Fig . 12 ) may differ greatly in length , and may be very unequally loaded , the latter condition being in a ...
... winding , or by an automatic regulator , as already described . In large systems of distribution the various feeders ( Fig . 12 ) may differ greatly in length , and may be very unequally loaded , the latter condition being in a ...
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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.