With the selection of electricity another question arose as to the expediency of employing continuous or alternating currents.
The study of alternating currents of electricity began to attract great attention towards the end of the 19th century by reason of their application in electrotechnics and especially to the transmission of power.
Rutherford used a method by which the period of the vibration can easily be determined; it is based upon the theory of the distribution of alternating currents in two circuits ACB, ADB in parallel.
The actions produced and producible by the agency of alternating currents of considerable energy are assuming greater importance in the electric arts.
This is the action occurring in any induction coil whose primary wire is traversed by alternating currents, and whose secondary wire is closed either upon itself directly or through a resistance.
In the use of alternating currents of very high tension, too much precaution cannot be taken to prevent the brush discharge.
They are constructed for the measurement not only of continuous or unvarying but also of alternating currents.
The instrument can therefore be graduated by passing through it known and measured continuous currents, and it then becomes available for use with either continuous or alternating currents.
This tendency of a current to reverse itself, under the conditions cited, is called self-induction, or inductance, and it would be well to keep this in mind in pursuing the study of alternating currents.
Time, therefore, is an element in the operation of alternating currents.
Owing to the inductive effects of alternating currents in long, parallel wires, such wires should be transposed between their supports at frequent intervals.
A fundamental feature of long transmissions is the high voltage necessary for economy in conductors, and this voltage is attained by entirely different methods with continuous and alternating currents.
The above principles and formulæ apply to the design of transmission lines for either continuous or alternating currents, but where the alternating current is employed certain additional factors should be considered.
Author of "The Principles of the Transformer;" Joint Author of "Alternating Currents.
Author of "Synchronous and Other Multiple Telegraphs;" Joint Author of "Alternating Currents.
Joint Author of "The Elements of Electrical Engineering," "The Elements of Alternating Currents.
If we had the gift of magnetic sight, and could see what is going on in the electro-magnet when it is excited by alternating currents, we should probably see the molecules or polarities tumbling over each other at an enormous rate.
In order to make comparative tests, the same apparatus may be supplied with continuous instead of alternating currents.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "alternating currents" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
