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 1Van Nostrand, 1896 |
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Сторінка 7
... ordinary illuminating - gas at one to two dollars per thousand cubic feet , which are the usual limits of price . In an isolated plant , put in where a steam plant already exists , the additional expense is small , as explained above ...
... ordinary illuminating - gas at one to two dollars per thousand cubic feet , which are the usual limits of price . In an isolated plant , put in where a steam plant already exists , the additional expense is small , as explained above ...
Сторінка 29
... ordinary constant - current lamps that the current is of low poten- tial ; that is , only about one or two hundred volts instead of two to five thousand volts which are usually employed on constant- current arc circuits . On the other ...
... ordinary constant - current lamps that the current is of low poten- tial ; that is , only about one or two hundred volts instead of two to five thousand volts which are usually employed on constant- current arc circuits . On the other ...
Сторінка 30
... ordinary arc lamp consumes 10 amperes and 45 volts , which is 450 watts ; and it gives about 350 candle - power ( i.e. , mean spherical ) . This is at the rate of about 1.3 watts per candle - power . The ordinary incandescent lamp ...
... ordinary arc lamp consumes 10 amperes and 45 volts , which is 450 watts ; and it gives about 350 candle - power ( i.e. , mean spherical ) . This is at the rate of about 1.3 watts per candle - power . The ordinary incandescent lamp ...
Сторінка 35
... ordinary 110 - volt circuit , with a small amount of resistance in series with them . This possibility of running both arc and incandescent lamps on the same circuit avoids the necessity of putting in special constant - current machines ...
... ordinary 110 - volt circuit , with a small amount of resistance in series with them . This possibility of running both arc and incandescent lamps on the same circuit avoids the necessity of putting in special constant - current machines ...
Сторінка 51
... ordinary rule is that there should be at least one spare machine of each kind , so that the breaking down of any one element shall not cripple the plant . A station with only two units would therefore require each to have the full ...
... ordinary rule is that there should be at least one spare machine of each kind , so that the breaking down of any one element shall not cripple the plant . A station with only two units would therefore require each to have the full ...
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Electric Lighting: A Practical Exposition of the Art, for the Use of ..., Том 2 Francis Bacon Crocker Попередній перегляд недоступний - 2016 |
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