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

Ans. Upon the quality of the iron in the core, the magnetic density at which it is worked and the frequency.

Fig. 1,942.—Fort Wayne transformer coils and core complete.

Ques. With a given quality of iron how does the hysteresis loss vary?

Ans. It varies as the 1.6 power of the voltage with constant frequency.

Ques. In construction, what is done to obtain minimum hysteresis loss?

Ans. The softest iron obtainable is used for the core, and a low degree of magnetization is employed.

Fig. 1,943.—Top view of Fort Wayne (type A) transformer cover removed, showing assembly of coils and core and disposition of leads.