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 13
... divided by the resistance . E C = - R Rule 2. The electromotive force is equal to the cur- rent multiplied by the resistance . E = CR Rule 3. The resistance is equal to the electromotive force divided by the current . E R = - с Rule 4 ...
... divided by the resistance . E C = - R Rule 2. The electromotive force is equal to the cur- rent multiplied by the resistance . E = CR Rule 3. The resistance is equal to the electromotive force divided by the current . E R = - с Rule 4 ...
Сторінка 19
... DIVIDED , BRANCHED OR SHUNT CIRCUITS . A single conductor , from one terminal of a gener- ator may be divided into one or more branches which may reunite before reaching the other ter- minal . Such branches may vary widely in resist ...
... DIVIDED , BRANCHED OR SHUNT CIRCUITS . A single conductor , from one terminal of a gener- ator may be divided into one or more branches which may reunite before reaching the other ter- minal . Such branches may vary widely in resist ...
Сторінка 25
... divided therefore in this ratio . The bridge wire must therefore connect at 2 ohms from its begin- ning , leaving 1 ohm to follow . The principle here illustrated can be proved generally and is the Wheat- stone Bridge principle ...
... divided therefore in this ratio . The bridge wire must therefore connect at 2 ohms from its begin- ning , leaving 1 ohm to follow . The principle here illustrated can be proved generally and is the Wheat- stone Bridge principle ...
Сторінка 27
... divided by the length of the second will give the square of the diameter of the first wire ; or divided by the square of the diameter of the first will give the length of the second . ld I'd2 EXAMPLES . 1. There are three wires , a is 2 ...
... divided by the length of the second will give the square of the diameter of the first wire ; or divided by the square of the diameter of the first will give the length of the second . ld I'd2 EXAMPLES . 1. There are three wires , a is 2 ...
Сторінка 29
... divided by its cross- sectional area in square centimeters . If the dimensions are given in inches or other units of measurements they must be reduced to centimeters by the table . Sp . R x 1 R = a EXAMPLES . An electro - plater has a ...
... divided by its cross- sectional area in square centimeters . If the dimensions are given in inches or other units of measurements they must be reduced to centimeters by the table . Sp . R x 1 R = a EXAMPLES . An electro - plater has a ...
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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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Сторінка 50 - This loss as previously explained, is equal to the square of the current multiplied by the resistance. The...
Сторінка 13 - The strength of the current is equal to the electro-motive force divided by the resistance...
Сторінка 57 - Specific Heat. The specific heat of a substance is the ratio of the heat required to raise the temperature of unit weight of the substance 1 deg.