File:Cyclopedia of applied electricity - a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric (14777838474).jpg

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Identifier: cyclopediaofappl05amer (find matches)
Title: Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc.
Year: 1916 (1910s)
Authors: American Technical Society
Subjects: Electric engineering
Publisher: Chicago : American Technical Society
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library

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> P Pi 5 O o ELECTRIC RAILWAYS 217 All types of bonds must be installed with great care if theyare to be efficient. Unless the bond terminal thoroughly fills thehole and is tightly expanded into it, moisture will creep into thespace between the copper and the iron, and the copper will becomecoated with a non-conducting scale which destroys the conductivityof the contact. Resistance of the Track. The resistance of the return circuitis sometimes much higher than it should be owing to the poor con-tact of the bonds. The resistance of rails varies greatly with theproportions of carbon, manganese, and phosphorus. The follov.ingfigures, however, may be regarded as average values for the rail alone. Weight per Yard Resistance Single Rail per Mile 50 .095 ohm 60 .079 ohm 70 .063 ohm 80 .059 ohm 90 .053 ohm A single track laid with continuous rails would have one-halfthe resistance given, since there are two rails in parallel. A bond may be considered good when the bond and 1 footof the rai

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Author American Technical Society
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Flickr tags
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  • bookid:cyclopediaofappl05amer
  • bookyear:1916
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:American_Technical_Society
  • booksubject:Electric_engineering
  • bookpublisher:Chicago___American_Technical_Society
  • bookcontributor:Northeastern_University__Snell_Library
  • booksponsor:Northeastern_University__Snell_Library
  • bookleafnumber:359
  • bookcollection:northeastern
  • bookcollection:blc
  • bookcollection:americana
Flickr posted date
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29 July 2014



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Date/TimeThumbnailDimensionsUserComment
current21:00, 7 December 2015Thumbnail for version as of 21:00, 7 December 20152,800 × 1,814 (1.03 MB)SteinsplitterBot (talk | contribs)Bot: Image rotated by 90°
20:19, 12 September 2015Thumbnail for version as of 20:19, 12 September 20151,814 × 2,806 (1.04 MB) (talk | contribs)== {{int:filedesc}} == {{information |description={{en|1=<br> '''Identifier''': cyclopediaofappl05amer ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fcyclopediaofappl05amer%2F fin...

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