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 19
... increase in the number of electrical terms and units , due to the rapid progress of knowledge ; but such new terms ... increased by the unfortunate fact that both the metric and English systems of measure are used in electrical engineer ...
... increase in the number of electrical terms and units , due to the rapid progress of knowledge ; but such new terms ... increased by the unfortunate fact that both the metric and English systems of measure are used in electrical engineer ...
Сторінка 24
... of a saturated solution of zinc sulphate and mercurous sulphate . The electro - motive force is 1.434 volts at 15 ° C .; and between 10 ° C. and 25 ° C. , by the increase of 1 ° C. in temperature , the 24 ELECTRIC LIGHTING .
... of a saturated solution of zinc sulphate and mercurous sulphate . The electro - motive force is 1.434 volts at 15 ° C .; and between 10 ° C. and 25 ° C. , by the increase of 1 ° C. in temperature , the 24 ELECTRIC LIGHTING .
Сторінка 25
... increase of 1 ° C. in temperature , the electro - motive force decreases by 0.00115 of a volt . 1. Preparation of the Mercury . - To secure purity it should be first treated with acid in the usual manner , and subsequently distilled in ...
... increase of 1 ° C. in temperature , the electro - motive force decreases by 0.00115 of a volt . 1. Preparation of the Mercury . - To secure purity it should be first treated with acid in the usual manner , and subsequently distilled in ...
Сторінка 29
... increase to any very great extent . The advantages of incandescent electric lighting are : The fact that lamps of any desired size from one candle - power to several hundred can be obtained and easily substituted one for the other . The ...
... increase to any very great extent . The advantages of incandescent electric lighting are : The fact that lamps of any desired size from one candle - power to several hundred can be obtained and easily substituted one for the other . The ...
Сторінка 43
... increased , it being not uncommon for the number of lights to double each year for several years . Provision should , therefore , be made to enable the plant to be enlarged to at least twice , and perhaps four or six times , its ...
... increased , it being not uncommon for the number of lights to double each year for several years . Provision should , therefore , be made to enable the plant to be enlarged to at least twice , and perhaps four or six times , its ...
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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 |
Загальні терміни та фрази
accumulator action advantage alternating current ampere ampere turns ampere-hours apparatus arc lamps armature arrangement battery belt boiler brushes carbon cast iron cause cell cent central stations centrifugal centrifugal force charge circuit coal coils commutator condensation conductors connected considerable consists construction copper core cylinder diameter direct coupling direct current direct-current discharge dynamo effect efficiency Elec electric lighting electric-lighting plant Electrical Engineer employed fact feet field-magnet flux fly-wheel force gas-engine governor heat horse-power incandescent lamps increase inductors insulation iron isolated plants latter Lightning-Arrester load machine machinery magnetic mechanical mercurous sulphate motor objectionable obtained ordinary piston plates pole-pieces practically pressure produced pulley reduced resistance revolutions per minute shaft short circuit short-circuited shown in Fig speed square inch steam steam-engine stroke sufficient sulphate supply surface switch temperature tion tubes turbine usually valve voltage volts weight wheel winding wire zinc zinc sulphate
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Сторінка 22 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
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