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 30
... square and 1 foot apart . What is the resist- ance of such a bath ? Solution : By the table 1 square foot = 929 sq ... inch cylinder of electric light carbon . The outer element was a plate of zinc 6 inches long bent into a circle . When ...
... square and 1 foot apart . What is the resist- ance of such a bath ? Solution : By the table 1 square foot = 929 sq ... inch cylinder of electric light carbon . The outer element was a plate of zinc 6 inches long bent into a circle . When ...
Сторінка 43
... inch . The area of a circle , one mil in diameter , is termed a circular mil ... square mil . Rules for the sizes of wires for given resistances are often ... foot long , and CHAPTER V CIRCULAR MILS -The Circular Mil as a Unit of Area ...
... inch . The area of a circle , one mil in diameter , is termed a circular mil ... square mil . Rules for the sizes of wires for given resistances are often ... foot long , and CHAPTER V CIRCULAR MILS -The Circular Mil as a Unit of Area ...
Сторінка 86
... square of the number of lines of force passing through the area of contact . Rule 65. The traction of a magnet in pounds is equal to the square of the number of lines of force per square inch , multiplied by the area of contact and ...
... square of the number of lines of force passing through the area of contact . Rule 65. The traction of a magnet in pounds is equal to the square of the number of lines of force per square inch , multiplied by the area of contact and ...
Сторінка 87
... square inch for wrought iron are good general averages ) and is multiplied by the cross - sec- tional area of the magnet core . Rule 67. To calculate the magnetizing force in am- pere turns required to force a given number of magnetic ...
... square inch for wrought iron are good general averages ) and is multiplied by the cross - sec- tional area of the magnet core . Rule 67. To calculate the magnetizing force in am- pere turns required to force a given number of magnetic ...
Сторінка 89
... square inch , and the armature core is 3 inches diameter and 10 inches long . The average length of travel of the magnetic lines through it is 1 inches . The air gaps ELECTRO - MAGNETS , DYNAMOS AND MOTORS . 89.
... square inch , and the armature core is 3 inches diameter and 10 inches long . The average length of travel of the magnetic lines through it is 1 inches . The air gaps ELECTRO - MAGNETS , DYNAMOS AND MOTORS . 89.
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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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