A forerunner in his field, Dr. Mulukutla S. Sarma has written not only this text, but also numerous technical articles for leading journals, including the first studies of methods for computer-aided analysis of three-dimensional nonlinear electromagnetic field problems as applied to the design of electrical machinery. Dr. Sarma is a life-fellow of IEEE (U.S.A), a fellow of IEEE (U.K.) and IEEE (India), a reviewer of several IEEE Transactions, a member of the IEEE Rotating Machinery Committee and a member of several other professional societies. He is also a professional engineer in the State of Massachusetts.