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 407
Fig. 309. Diagram Showing Copper Dampersin Place in Field Poles 362 … ALTERNATING-CURRENT MACHINERY 347 The use of solid poles, however, leads to excessive eddy-currentlosses; hence solid poles are not considered desirable. Inverted Rotaries. When a rotary converter is used to converta direct current into an alternating current, taking direct currentin at the…
Electrical engineering
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