PKINCIPLES 



OF 



ELECTRICAL DESIGN 



D. C. AND A. C. GENERATORS 



BY 

 ALFRED STILL 



PROFESSOR OP ELECTRICAL DESIGN, PURDUE UNIVERSITY; FELLOW AMERICAN INSTITUTE 



OF ELECTRICAL ENGINEERS; MEMBER INSTITUTION OF CIVIL ENGINEERS; MEMBER 



INSTITUTION OF ELECTRICAL ENGINEERS. AUTHOR OF "ELECTRIC POWER 



TRANSMISSION," "PRINCIPLES OF TRANSFORMER DESIGN," ETC. 



SECOND EDITION 



FACULTY OF APPLIED SCIENCE. 





McGRAW-HILL BOOK COMPANY, INC. 



NEW YORK: 370 SEVENTH AVENUE 



LONDON: 648 BOUVERIE ST., E. C. 4 



1921 



