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 350
or the moving of masses of iron in the neighborhood. 313 IS ELECTRICAL MEASUREMENTS Tlie astatic <i;al\anometer is, however, as a rule, far more sensitiveand for certain i)iirposes must be used. GALVANOMETER TYPE OF PORTABLE INSTRUMENTS Application of DArsonval Principle. Li the majority of… … Fig. 21. DArsonval Type VoltmeterCourtesy of General Electric Company table instruments for the direct measurement of current and electro-motive force. When used for measuring current, these instrumentsare called ammeters and read the current in amperes; and when usedfor measuring electromotive…
Electrical engineering
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