Magnets And Electric Currents An Elementary Treatise for the Use of Electrical
Magnets And Electric Currents An Elementary Treatise for the Use of Electrical
John Ambrose Fleming
The book Magnets And Electric Currents An Elementary Treatise for the Use of Electrical was written by author John Ambrose Fleming Here you can read free online of Magnets And Electric Currents An Elementary Treatise for the Use of Electrical book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Magnets And Electric Currents An Elementary Treatise for the Use of Electrical a good or bad book?
What reading level is Magnets And Electric Currents An Elementary Treatise for the Use of Electrical book?
To quickly assess the difficulty of the text, read a short excerpt:
At the places where the trans- formation of energy is to be made, alternate current transformers are placed, the primary coils of these ALTERNATING OR PERIODIC CURRENTS. 26 1 transformers being connected across between the two primary circuits. These transformers, taking primary current from these mains at a high pressure, transform down the pressure in a certain ratio, say from 2000 to 100 volts ; and from their secondary terminals proceed two conductors, called secondary leads, to which are a...ttached the lamps or motors, or other devices for uti- lising the current. In this system there is a loss of power due to the heating of the primary mains, and also a loss due to the internal losses in the transformers ; but under proper conditions, and beyond a certain distance, these two sets of losses may be made to involve less total cost than would be the case under the direct transmission of the same amount of electric power at a lower pressure. In the early days of electric lighting attempts were made to arrange the transformers with their primary coils in series, as in Fig.
User Reviews: