Arithmetic of Electricity: A Practical Treatise on Electrical Calculations of All Kinds Reduced to a Series of Rules, All of the Simplest Forms, and Involving Only Ordinary Arithmetic ...N.W. Henley Publishing Company, 1909 - 162 стор. |
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Сторінка 83
... field ; a line perpen- dicular to such plane gives the direction of the lines of force , or of the magnetic flux ... core of a magnet carrying 20,000 lines of force . PERMEANCE AND RELUCTANCE . This action of centralizing in its own ...
... field ; a line perpen- dicular to such plane gives the direction of the lines of force , or of the magnetic flux ... core of a magnet carrying 20,000 lines of force . PERMEANCE AND RELUCTANCE . This action of centralizing in its own ...
Сторінка 84
... magnetism . MAGNETIZING FORCE AND THE MAGNETIC CIR- CUIT . The producing cause of the magnetic flux or mag- netization just described is in practice always a cur- rent circulating around an iron core ... magnet the return branch of the ...
... magnetism . MAGNETIZING FORCE AND THE MAGNETIC CIR- CUIT . The producing cause of the magnetic flux or mag- netization just described is in practice always a cur- rent circulating around an iron core ... magnet the return branch of the ...
Сторінка 86
... magnet experimentally . Rule 66. The lines of force which can pass through a magnet core with economy are determined by the tables , keeping in mind that it is not advisable to let the per- meability fall below 200-300 . From them a ...
... magnet experimentally . Rule 66. The lines of force which can pass through a magnet core with economy are determined by the tables , keeping in mind that it is not advisable to let the per- meability fall below 200-300 . From them a ...
Сторінка 87
... magnet core . Rule 67. To calculate the magnetizing force in am- pere turns required to force a given number of magnetic lines through a given permeance , multiply the desired lines of force by the reluctance determined as below . Rule ...
... magnet core . Rule 67. To calculate the magnetizing force in am- pere turns required to force a given number of magnetic lines through a given permeance , multiply the desired lines of force by the reluctance determined as below . Rule ...
Сторінка 88
... magnetic circuit , because mag- netization can no more exist without a circuit than can an electric current . In practice an electro- magnetic circuit consists of four parts : 1 , The magnet cores ; 2 and 3 , the gaps between armature and ...
... magnetic circuit , because mag- netization can no more exist without a circuit than can an electric current . In practice an electro- magnetic circuit consists of four parts : 1 , The magnet cores ; 2 and 3 , the gaps between armature and ...
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Загальні терміни та фрази
50 cents 50 ohms 50 volts air gaps alternating current ampere turns ance appliances armature core battery C. G. S. units calculated calories capacity cells in parallel cells in series circular mils coefficient of leakage coil conductance conductor copper coulombs cross-sectional area cycles per second difference of potential distance divided drop dynamo efficiency electromotive force energy engines EXAMPLE expressed external circuit factors farad field resistance fractions given gives gram heat developed horse power horse-power inductance internal resistance joules kilogram-meter lamps in parallel leads length lines of force lines per square magnet core magnetic circuit meter microfarad microhms mils in diameter motor multiplied number of cells number of turns Ohm's law ohms resistance permeability permeance proportion ratio of conversion reciprocal reduced reluctance Rule 55 Rules 30 sectional area shunt Solution specific resistance square centimeter square inch tion turns of wire voltage weight wrought iron
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