Electromechanical Machinery Theory and Performance presents a detailed explanation of electromagnetic machines, giving specific focus on transformers and AC rotating machines that can be used in the generation, transmission and utilization preservation and transference of electrical energy and power. This book is developed for students at both graduate and undergraduate level, and can be used by practicing engineers as well. Electromechanics combines processes and procedures drawn from electrical engineering and mechanical engineering. Electromechanics focuses on the interaction of electrical and mechanical systems as a whole and how the two systems interact with each other. This process is especially prominent in systems such as those of DC or AC rotating electrical machines which can be designed and operated to generate power from the mechanical process or used to power mechanical motors. Electrical engineering, in this context, also encompasses electronics engineering.