Practical wireless telegraphy; a complete text book for students of radio communication (1917)
Bucher, Elmer Eustice, 1885- · New York, Wireless Press, Inc · leaf 66
Cycle Motor Generator. generator has 30 field poles and the motor 2 field poles. The armature revolves at2,000 R. P. M., hence there are 33 1-3 revolutions per second which multipliedby 30 (the number of field poles) gives 1,000 alternations of current per second.And since two alternations of… … Fig. 67b—2 K. W. Crocker-Wheeler Motor Generator Assembled. 56 PRACTICAL WIRELESS TELEGRAPHY. ROTOR OFGENERATOR QENERATORARMATURE, MOTOR ARMATURE
Telegraph, Wireless
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