The generating plantVan Nostrand, 1896 |
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Page 5
... resistance can be used for a direct current , and a choke coil for an alternating current ; and either of these can be applied without much trouble or expense , and the only reason they are not often used is that they are not needed ...
... resistance can be used for a direct current , and a choke coil for an alternating current ; and either of these can be applied without much trouble or expense , and the only reason they are not often used is that they are not needed ...
Page 14
... resistance ; and the armature introduced by Edison did not have more than one - fifth to one - tenth of the resistance of similar machines used by others prior to that time . Second , a constant potential or electrical pressure was main ...
... resistance ; and the armature introduced by Edison did not have more than one - fifth to one - tenth of the resistance of similar machines used by others prior to that time . Second , a constant potential or electrical pressure was main ...
Page 15
... resistance filaments are practically necessary to enable the use of reasonably high voltage , which greatly reduces the weight of copper required for the conductors , and a vacuum is required to prevent the destruction of the filament ...
... resistance filaments are practically necessary to enable the use of reasonably high voltage , which greatly reduces the weight of copper required for the conductors , and a vacuum is required to prevent the destruction of the filament ...
Page 22
... resistance shall be what is known as the International ohm , which is substantially equal to one thousand million units of resistance of the centimeter - gram - second system of electro - magnetic units , and is repre- sented by the ...
... resistance shall be what is known as the International ohm , which is substantially equal to one thousand million units of resistance of the centimeter - gram - second system of electro - magnetic units , and is repre- sented by the ...
Page 23
... resistance is one international ohm , will produce a current of an international ampere , and is practically equivalent to one thousand fourteen hundred and thirty - fourths ( 1999 ) of the electro - motive force between the poles or ...
... resistance is one international ohm , will produce a current of an international ampere , and is practically equivalent to one thousand fourteen hundred and thirty - fourths ( 1999 ) of the electro - motive force between the poles or ...
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Common terms and phrases
accumulator action advantage alternating current ampere hours ampere turns amperemeter arc lamps armature core arranged battery belt boiler brushes cast iron cause cell cent central stations centrifugal force charge coils commutator conductors connected considerable consists construction copper cylinder diameter direct coupling direct current direct-current discharge dynamo eddy currents effect efficiency Elec electric lighting Electrical Engineer employed energy example fact feet field-coils field-magnet flux fly-wheel friction gas-engine gearing governor heat hence horse-power hysteresis incandescent increase inductors insulation iron lamps latter Lightning-Arrester lines of force load machine machinery magnetic circuit metal motor multipolar objectionable obtained ordinary piston plates pole-pieces poles potential practically pressure produced pulley reduced resistance revolutions per minute ring rope shaft short-circuited shown in Fig sparking speed steam steam-engine sufficient sulphate surface switch temperature tion turbine usually valve voltage voltmeter volts weight wheel winding wire zinc
Popular passages
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Page 23 - ... As a unit of electromotive force, the international volt, which is the electromotive force that, steadily applied to a conductor whose resistance is one international ohm, will produce a current of one international ampere, and which is represented sufficiently well for practical use by \\\% of the electromotive force between the poles or electrodes of the voltaic cell known as Clark's cell, at a temperature of 15° C., and prepared in the manner described in the accompanying specification...
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Page 24 - It is nearly filled with the solution, and connected to the rest of the circuit by being placed on a clean copper support to which a binding screw is attached.