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 359
or View of Precision Wattmeter Courtesy of Westinghouse Electric and Manufacturing Company 322 ELECTRICAL MEASUREMENTS 27 These instruments are made as voltmeters and ammeters,having an outer scale graduated in degrees and an inner scalereading directly in volts or amperes; they are also designed… … Fig. 32. Deflection Wattmeter of Electrodynamometer TypeCourtesy of Weston Electric Instrument Company and the current which depends upon the potential of the circuit ispassed through the movable coil or coils. The resultant effect isdue to the product of the fields produced by the two currents;…
Electrical engineering
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