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 4
... depends . In other words , if the electric light does not possess decided advantages over the gas light and other means of lighting already in existence , it is obvious that its intro- duction is of no utility , and the study of it is ...
... depends . In other words , if the electric light does not possess decided advantages over the gas light and other means of lighting already in existence , it is obvious that its intro- duction is of no utility , and the study of it is ...
Сторінка 9
... depends essentially upon the use of an electric current of several amperes , or a large fraction of one ampere . Frictional electric machines cannot give any such current ; therefore electric lighting of the kind now practiced was an ...
... depends essentially upon the use of an electric current of several amperes , or a large fraction of one ampere . Frictional electric machines cannot give any such current ; therefore electric lighting of the kind now practiced was an ...
Сторінка 11
... depends . The next important step in the development of the dynamo was the improvement of the arma- ture , which up to that time had been quite crude . In 1860 Pacinotti designed , and in 1865 published * a description of , a machine ...
... depends . The next important step in the development of the dynamo was the improvement of the arma- ture , which up to that time had been quite crude . In 1860 Pacinotti designed , and in 1865 published * a description of , a machine ...
Сторінка 21
... depend- ing upon the specific heat of water and the force of gravity . * Everett's C. G. S. System of Units , 1891 Edit . , pp . 99-101 . Accepting the latter value , we have the following relations GENERAL UNITS AND MEASURES . 176 21.
... depend- ing upon the specific heat of water and the force of gravity . * Everett's C. G. S. System of Units , 1891 Edit . , pp . 99-101 . Accepting the latter value , we have the following relations GENERAL UNITS AND MEASURES . 176 21.
Сторінка 32
... depend upon the conditions in each particular case . It is discussed more fully later in its bearing upon the problem of selecting a system in a given case . In this connection it is one of the most important questions which an ...
... depend upon the conditions in each particular case . It is discussed more fully later in its bearing upon the problem of selecting a system in a given case . In this connection it is one of the most important questions which an ...
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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.