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. (1916)
American Technical Society · Chicago : American Technical Society · leaf 377
ohms. Supposing P to be 10 ohms and the slide-wireone meter long; then if a balance were obtained with the slide-wireat a point 400 millimeters from y, M is 400 and N is ()00. „ ()()0 ,,,-,-,A= — XlO = loohms400 340 ELECTRICAL MEASUREMENTS 45 A key should be inserted in the battery circuit to… … Fig. 49. Standard Plug-Type Resistance Box and Whcatitonc BridgeCourtesy of Leeds and Northrup Company, Philadelphia shown in Fig. 49. The principle of this instrument is the same asdescribed for Fig. 47, the only difference being that the value of theresistance in arm P is varied in order to find…
Electrical engineering
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