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 11
... field magnetism was produced by permanent mag- nets . The use of electro - magnets , and the principle of self ... magnet which formed the field magnet of a very much larger generator . In this way he obtained very powerful effects , and ...
... field magnetism was produced by permanent mag- nets . The use of electro - magnets , and the principle of self ... magnet which formed the field magnet of a very much larger generator . In this way he obtained very powerful effects , and ...
Сторінка 16
... magnetic circuit of dynamo machines , which up to that time had been very imperfectly understood ; and most machines at that time were very bad in this respect . Kapp brought out in 1887 a similar method of designing the field magnets ...
... magnetic circuit of dynamo machines , which up to that time had been very imperfectly understood ; and most machines at that time were very bad in this respect . Kapp brought out in 1887 a similar method of designing the field magnets ...
Сторінка 32
... field magnet , and this involves a commutator . The alternating current can also be regulated by means of the counter electromotive force of a " choke coil , " which shuts off the current without wasting so much energy as the simple ...
... field magnet , and this involves a commutator . The alternating current can also be regulated by means of the counter electromotive force of a " choke coil , " which shuts off the current without wasting so much energy as the simple ...
Сторінка 75
... magnetic field . Thus we see that there are seven distinct steps in the process of generating elec- tricity , for which three large and expensive pieces of apparatus are required ; viz . , boiler , steam - engine , and dynamo , each of ...
... magnetic field . Thus we see that there are seven distinct steps in the process of generating elec- tricity , for which three large and expensive pieces of apparatus are required ; viz . , boiler , steam - engine , and dynamo , each of ...
Сторінка 186
... field - magnet is excited , and with about 3 per cent if the field is not excited , whereas a steam - engine requires 8 to 12 per cent of its total power when running without load ; hence there is much greater likelihood of mistake or ...
... field - magnet is excited , and with about 3 per cent if the field is not excited , whereas a steam - engine requires 8 to 12 per cent of its total power when running without load ; hence there is much greater likelihood of mistake or ...
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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 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 example 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 lines 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 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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