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 65
... number of cells is to be implied and the resistance of the external circuit which is designated by r . Rule 47. The current given by a battery is equal to its electro - motive force divided by the sum of the exter- nal and internal ...
... number of cells is to be implied and the resistance of the external circuit which is designated by r . Rule 47. The current given by a battery is equal to its electro - motive force divided by the sum of the exter- nal and internal ...
Сторінка 67
... cells arranged to give 75 volts E. M. F. with an internal resistance of 100 ohms sends a current through a conductor ... number of cells . being equal to the product of s and p . Other arrangements are possible . Thus the cells may ...
... cells arranged to give 75 volts E. M. F. with an internal resistance of 100 ohms sends a current through a conductor ... number of cells . being equal to the product of s and p . Other arrangements are possible . Thus the cells may ...
Сторінка 69
... CELLS REQUIRED FOR A GIVEN CURRENT . To calculate the cells required to produce a given current through a given ... number of cells 66.6 or 67 cells , as a cell cannot 100 = 21 amperes . falls under case A. 100 is = 2 - · ( 2 × } ) 100 ...
... CELLS REQUIRED FOR A GIVEN CURRENT . To calculate the cells required to produce a given current through a given ... number of cells 66.6 or 67 cells , as a cell cannot 100 = 21 amperes . falls under case A. 100 is = 2 - · ( 2 × } ) 100 ...
Сторінка 70
... cells in series = 67 × 2 = 134 volts ; their resistance allel is 40 ohms . = 67 × 1 = 13.4 ohms . The resistance of ... number of cells multiplied by the voltage of one cell ; 52.6 is the number of cells multiplied by the resistance in ...
... cells in series = 67 × 2 = 134 volts ; their resistance allel is 40 ohms . = 67 × 1 = 13.4 ohms . The resistance of ... number of cells multiplied by the voltage of one cell ; 52.6 is the number of cells multiplied by the resistance in ...
Сторінка 71
... cells in parallel gives 18 amperes . 8 exceeds 21 × 2 ... applying Rule 49 we have number of groups = 100+ [ 1 − ( 21 × .125 ) ] = 146 groups in series . Total number of cells = 2 in parallel , 146 in series = 292 cells . Proof ...
... cells in parallel gives 18 amperes . 8 exceeds 21 × 2 ... applying Rule 49 we have number of groups = 100+ [ 1 − ( 21 × .125 ) ] = 146 groups in series . Total number of cells = 2 in parallel , 146 in series = 292 cells . Proof ...
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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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