International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them
International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them
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In our eReader you can find the full English version of the book. Read International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them
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To quickly assess the difficulty of the text, read a short excerpt:
In Fig. 64 is shown a slnfirie spring-Jack s^vltchboard for use in a terminal office. Only two rows of disks, the fourth and fifth, are shown connected to the dynamos that supply current to the lines, but many more rows are usually connected in this manner. The disks in each row are not joined directly together behind the board, in this case, where dynamos are used, but are first con- nected to incandescent lamps or non-inductive resistance coils, and the other terminal of the lamp or coil is t...hen joined to the dynamo lead or bus-bar, as mentioned in Art. 203. To avoid making the figure too complicated, only two disks are shown connected through lamps to the bus-bars. All disks in the same horizontal row, excepting Digitized by VjOOQIC 150 TELEGRAPHY. § 2 those connected through lamps to the main-line dynamos, are joined together, as usual, by brass or copper horizontal strips behind the board. The bottom row is connected to the ground.
209* The bottom part of each spring jack is invariably connected to the vertical strap immediately above it, but the top terminals are connected in various ways.
What to read after International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them?
You can find similar books in the "Read Also" column, or choose other free books by International Textbook Company to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In Fig. 64 is shown a slnfirie spring-Jack s^vltchboard for use in a terminal office. Only two rows of disks, the fourth and fifth, are shown connected to the dynamos that supply current to the lines, but many more rows are usually connected in this manner. The disks in each row are not joined directly together behind the board, in this case, where dynamos are used, but are first con- nected to incandescent lamps or non-inductive resistance coils, and the other terminal of the lamp or coil is t...hen joined to the dynamo lead or bus-bar, as mentioned in Art. 203. To avoid making the figure too complicated, only two disks are shown connected through lamps to the bus-bars. All disks in the same horizontal row, excepting Digitized by VjOOQIC 150 TELEGRAPHY. § 2 those connected through lamps to the main-line dynamos, are joined together, as usual, by brass or copper horizontal strips behind the board. The bottom row is connected to the ground.
209* The bottom part of each spring jack is invariably connected to the vertical strap immediately above it, but the top terminals are connected in various ways.
What to read after International Library of Technology; a Series of Text Books for Persons Engaged in the Engineering Professions And Trades, Or for Those Who Desire Information Concerning Them?
You can find similar books in the "Read Also" column, or choose other free books by International Textbook Company to read onlineMoreLess
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