The interesting paper recently contributed by Behrend to the proceedings of, the INSTITUTE has incited the writers to the preparation of the present paper, which sets forth their own views regarding the regulation of alternating-current generators.It is unnecessary to refer to the tneories of others, since these have so recently been discussed by Behrend*, who has shown by means of practical examples that none of these theories give correct results for different types of machines.The theory which the writers describe in this paper has been tested on but a limited number of machines, but has in these cases given such excellent results as amply to justify its publication, in the hope that this will lead to its being subjected to further tests in impartial quarters.Moreover, the writers entertain the hope that the theory itself will, independently of practical examples, prove convincing in virtue of its freedom from hypothetical assumptions. Nevertheless its reliability must of course be demonstrated by testing it by a large number of practical examples of various types of machines. It is our intention to bring together such practical examples in a treatise on the design of alternating-current generators, in which this theory will be employed in the sections relating to pressure regulation.The change in the pressure of a constantly-excited alternatingcurrent generator when its load is varied in nature or amount, is *TRANS. Am. Inst.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.