Rotating machines are the machines which are made up of two main parts- the rotor and the stator. The non-moving segment of the machine is known as the stator and the rotating segment is known as the rotor. Rotating machines find a wide variety of uses in a number of domains such as domestic appliances, transportation vehicles and industrial manufacturing plants. AC and DC machines are prominent examples of rotating machines. In AC machines, the rotor is used as the field, and the stator is used as the armature, while the reverse is applicable for DC machines. This book provides significant information to help develop a good understanding of rotating machines and their dynamics. It is a valuable compilation of topics, ranging from the basic to the most complex advancements in this field. This book will serve as a valuable source of reference for graduate and post graduate students.