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 1D. Van Nostrand Company, 1906 |
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Сторінка 28
... usually there is no difficulty in distinguish- ing between them . A central station electric - lighting system is usually extensive and elaborate technically , and quite complicated and difficult in its business management . It consists ...
... usually there is no difficulty in distinguish- ing between them . A central station electric - lighting system is usually extensive and elaborate technically , and quite complicated and difficult in its business management . It consists ...
Сторінка 29
... usually entirely local ; that is , the plant supplies current for lighting a single building or group of buildings . The gener- ating plant or machinery is ordinarily located in the cellar , or some small portion of the building . An ...
... usually entirely local ; that is , the plant supplies current for lighting a single building or group of buildings . The gener- ating plant or machinery is ordinarily located in the cellar , or some small portion of the building . An ...
Сторінка 35
... usually found that the simplest , most standard , and well - tried devices give by far the most satisfactory results . Radical and sensational departures from established practice are usually the cause of regret to all concerned . The ...
... usually found that the simplest , most standard , and well - tried devices give by far the most satisfactory results . Radical and sensational departures from established practice are usually the cause of regret to all concerned . The ...
Сторінка 38
... usually runs a large part of the time lightly loaded ; and during all that time the alternating system is much more wasteful of energy than the direct ; because in the former case the leakage current is always flowing in the ...
... usually runs a large part of the time lightly loaded ; and during all that time the alternating system is much more wasteful of energy than the direct ; because in the former case the leakage current is always flowing in the ...
Сторінка 41
... usually close early in the evening , whereas restaurants and saloons are open late . Professor E. P. Roberts has gone into this matter in detail , and tabulated what may be expected of different kinds of customers . * By adding up in ...
... usually close early in the evening , whereas restaurants and saloons are open late . Professor E. P. Roberts has gone into this matter in detail , and tabulated what may be expected of different kinds of customers . * By adding up in ...
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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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alternating current amount ampere-hours ampere-turns amperes apparatus arc lamps armature core arrangement belt boiler booster brushes carbon cause cell cent centimeters centrifugal force charge circuit cloth coal coils commutator condensation conductors connected consists construction copper cut-off cylinder diameter direct direct current direct-current discharge dynamo effect efficiency Elec electric lighting electric-lighting electrolyte employed fact feet field-magnet flux density fly-wheel force fuel gas-engine governor heat hence incandescent lamps inch inductors insulation iron latter lines load machine machinery magnetic magnetic circuit mechanical mercurous sulphate motors multipolar obtained operated ordinary pipe piston plant plates pole-pieces poles practically pressure produced pulley represented in Fig resistance revolutions per minute ring shaft short-circuited shown in Fig shunt speed square steam steam-engine storage battery stroke sulphate supply surface switch temperature tion tubes turbine usually valve voltage voltmeter volts water-tube boilers weight wheel winding wire 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.
Сторінка 483 - Illustrated. 8vo, cloth. $2.00. Elements of Electric Lighting, including Electric Generation, Measurement, Storage, and Distribution. Tenth Edition, fully revised and new matter added. Illustrated. 8vo, cloth. $1.50. Power Transmitted by Electricity and Applied by the Electric Motor, including Electric Railway Construction.
Сторінка 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...
Сторінка 483 - ABBOTT, AV The Electrical Transmission of Energy. A Manual for the Design of Electrical Circuits.