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 158
pe of a. c. circuit is called three-phase,and is also used both for light and power. The essential parts ofsuch a system are shown in Fig. 16 where it will be noted that thedynamo has three slip rings, the circuit has three wires and thetransformer has three coils in the primary Ti, and three in… … Fig. 10. Diagram of Three-Phase Alternating-Current Circuit phase or pair of wires is reached at different instants of time. Suchcircuits are very widely used, especially for power, with what areknown as three-phase induction motors. 138
Electrical engineering
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