Abstract:
The author wishes to express his deep gratitude to Dr. G, C. Jain Assist--ant Professor, University of Purdue, for the guidance received by him as regards this subject in particular and in general the knowledge about machines obtained by him from the lectures delivered by Dr. G. C. Jain, while he was at the Universi-ty of Roorkee. He wishes to be extremely thankful for the personal interest and indispensable help given by him without which this work would have not been posses -ib le.
The author is very obliged to Prof, C. 8. Ghosh, Head of the Department of Electrical Engincoring , University of Roorkee, for all sorts of help ®htended
to him in the laboratories of Electrical Engineering Department, for the purpose of experimental varifications of his res--ults,
