Hawkins Electrical Guide v. 06 (of 10) / Questions, Answers, & Illustrations, A progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications

by N. Hawkins

Ques. What is the nature of the field circuit of the compensated repulsion motor at starting?

Ans. At starting it is practically non-inductive, the effect of speed being to introduce a spurious resistance which increases directly with the speed, and becomes negative when the speed is reversed.

Ques. For what use is the compensated repulsion motor especially adapted?

Ans. For light railroad service.

Ques. When employed thus what is the method of control?

Ans. A series transformer is used in the field circuit.

Ques. What frequencies are employed with this motor?

Ans. 25 to 60, the preferred frequency being 40.

Ques. To what important use is the repulsion principle put?