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I.C.S. Reference Library Volume 47; A Series of Textbooks

I.C.S. Reference Library Volume 47; A Series of Textbooks


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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1905 Excerpt: ...relays and is not in the right direction to close the polar relays; hence, all the relays will be open. 5. Key Pk Closed.--Closing the key Pk, all other keys being open, reverses the short-end battery B causing the potential at h to be +100. Consequently, B, and B, are in series, giving---(y) in the line coils o, I, and (y) in the R R artificial-line coils, /. The----(y) in o and the---(y) in i R R will give an effective current of--(y) in o, because the cur R rent flows from h through the two coils o, i in opposite directions around the iron core; hence, the-(y) in o neutralizes R -(y) in i and still has left--(y) with which to magnetize R R the neutral relay NR. This current is too weak, however, to close this relay; hence, closing the pole-changer key Pk does not affect the neutral relay NR. 200 As in the case of the neutral relay NR, the current (y) R in / and the current----(y) in/ flows in opposite directions R around the cores of the polar relay, giving an effective current equivalent to----(y) in / alone, which will, on account R of the direction in which it flows, continue to hold the polar relay PR open. Or, we may consider that the current 100 of---(y) now flowing in the coil / tends to close the polar R 200 relay, but that the current-(y) in the coil / tends to keep R.. 200... 100...., it open, and since----is twice----, the resultant magnetism, R R which is due to----(y) in the coil /, will hold PR open; R hence, closing the key Pk does not affect either of the home relays NR or PR. There is a current of----(x, ) in /, and----(x, ) in /, . R R The current in /, is the same in strength and direction as 200 hefore and tends to hold the polar relay open, but (, ) R in /, tends to close the relay; hence, the resultant magnetism that is du.


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Product Details
  • ISBN-13: 9781231238301
  • Publisher: Rarebooksclub.com
  • Publisher Imprint: Rarebooksclub.com
  • Height: 246 mm
  • No of Pages: 158
  • Spine Width: 9 mm
  • Width: 189 mm
  • ISBN-10: 1231238305
  • Publisher Date: 01 May 2012
  • Binding: Paperback
  • Language: English
  • Returnable: N
  • Weight: 295 gr


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