International Library of Technology · Scranton, International Textbook Co. · leaf 208
meter bridge, is used. A diagram of this bridge is shown 1642 ELECTRICAL MEASUREMENTS. in Fig. 1005. A wire a b of uniform cross-section is stretchedbetween the heavy copper blocks c and d. 7? is a known andX an unknown resistance, both of which are connected atone end to the heavy copper block e,… … Fig. 1005.bridge where the arms M and N are replaced by R and a n,and the adjustable resistance by n b. From the considera«tion of the principles of the Wheatstone bridge,R : X \\ a n : n b\ or. X^Rv.—.an The copper blocks c^ e, and dsive made heavy, so that theywill introduce no appreciable…
Electrical engineering
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