Twentieth century hand-book for steam engineers and electricians, with questions and answers .. (1905)
Swingle, C. F. [from old catalog], Horstmann, Henry Charles, 1858- [from old catalog], Tousley, Victor Hugo, 1875- [from old catalog] · Chicago, F. J. Drake & co. · leaf 542
ndthe pipe to the wires, and the current to the waterflowing back and forth. The form and winding of122 s ELECTRICITY TOR ENGINEERS 123 alternating current dynamos varies considerably, butthey generally follow the plan shown in Fig. 69. Inthe figure the pole pieces are alternately north (N)… … figure 69. direct current is usually obtained from another sourceaside from the current generated in the armature ofthe alternating current dynamo. A separate dynamo,called an exciter, is employed for supplying the cur-rent to the fields. There are some types of so calledcomposite wound alternating…
