A supplementary book on power systems and their points is necessary for every successful student because the main books contain so much information. The supplementary book should have a summary, many tests, and an explanation of the answers. There is a descriptive answer sheet in this book that is very helpful for re-reading and summarizing the information. This book can help you increase your study speed and master the important lessons if you are in the last few months of the semester and have not studied. This book is styled after national exams, with many varied tests with complete descriptive answers. This book covers everything you need to know about power systems analysis. A comprehensive and detailed examination of each image and figure has been conducted in this book In this book, you will be able to review points more quickly. It is particularly helpful before exams or national tests when you are under stress. It has the main advantage of providing an analysis of concepts and their combination. This allows us to better answer questions derived from several other subjects in a combined manner.