1.Electrical Machinery by P.S Bimbhra:

This book contains in depth explanations of the core concepts you need to know for the exam. It also contains questions from previous GATE examinations which gives readers an idea about the question types. This book may not suit the beginners as the language can be intimidating. But the book is quite popular among GATE aspirants.

2.Signals and Systems 2nd Edition by Alan V. Oppenheim, Allan S. Willsky, S. Hamid Nawab :

This book provides the basics for Signals and Systems. It may feel tedious to go through the book, but all theory and basics required for revision are included. The concepts are well defined and the exercises after each chapter help you master those concepts. The solution manual is also available online.

3.Control Systems Engineering 6th Edition by Norman S. Nise:

Simple illustrations with various real life examples are presented . All concepts are described well. This book is ideal for beginners in the control system. It is very suitable and reliable for GATE and other competitive exams.

4.A Course in Electrical and Electronic Measurements and Instrumentation by A. K. Sawhney:

This book is detailed in the field of measurement. It contains detailed theory covering all of the syllabus. Solved examples are also given to illustrate the theoretical concepts.

5.GATE 2015 Electrical Engineering 12th Edition:

This book contains a series of questions and solved examples to help you polish your strengths and work on your weaknesses. The free DVD with the book includes good quality video lectures.

6.Electronic Devices & Circuits Theory 10th Edition by Robert L. Boylestad, Louis Nashelsky:

This book is detailed for beginners to analog electronics. Very simple representation of concepts is the main feature of the book. Also, numericals are provided where needed to enhance the understanding of the concepts .

7.Power Electronics by P.S Bimbhra:

Contains detailed theory supplemented with sufficient solved examples. The book is perfect for beginners. Various concepts are illustrated in a very lucid manner and with appropriate diagrams. Lots of multiple-choice questions are given at the end of the book which is helpful for the preparation of competitive exams.

8.Engineering Electromagnetics 7th Edition by W H Hayt, J A Buck:

This book is a must for GATE EE aspirants; it covers all the topics with suitable examples and good questions to help improve your knowledge and clarify the basics.

9.Circuit Theory: Analysis and Synthesis (English) 6th Edition by A Chakraborty:

Lots of solved examples are the main feature of the book. It helps in understanding the concepts of basic circuit analysis which is necessary for all competitive exams. Various methods of solving critical circuitry is well explained. The required theory is also presented in a very understandable way.

10.Higher Engineering Mathematics (English) 43rd Edition by BS Grewal:

This is the only book you will need for engineering mathematics. All required theories are provided with sufficient explanations. High quality solved examples in the book help students understand the concepts properly. It is one of the most important books for the preparation of GATE.

Hope for the best.

Thank you.