Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: May 17, 2025
When mechanical power is employed for producing a current by means of a magneto-electric or dynamo-electric machine or, to use a better expression, by means of a mechanical generator of electricity it is necessary in reality to expend a greater quantity of power than i squaredR in order to make up for losses which result either from ordinary friction or from certain electro magnetic reactions which occur.
The ratio of the quantity, i squaredR, to the power, W, actually expended per unit of time is called the efficiency of the generator. Designating it by K, we obtain, W = i squaredR/K. It is very important to ascertain the value of this efficiency, considering that it necessarily enters as a factor into the evaluation of all the effects to be produced by help of the generator in question.
The expression for this quantity of heat, per unit of time, is Ai squaredR; A being the thermal equivalent of the unit of power corresponding to the units of current and resistance, in which i and R are respectively expressed. The product, i squaredR, is a certain quantity of power, which the author proposes to call power transformed into electricity.
Total resistance in absolute units 2.435 3.648 4.718 5.787 x10^9 x10^9 x10^9 x10^9 Intensity in chemical units 17.67 10.99 8.09 6.28 Intensity in absolute units 2.828 1.759 1.295 1.005 Work done i squaredR in absolute units 1948.6 1129.2 791.3 584.9 x10^7 x10^7 x10^7 x10^7 Work done i squaredR in kilogrammes 198.6 115.1 80.66 59.62 Power expended in kilogrammes 301.5 141.0 86.25 83.25
Word Of The Day
Others Looking