Below are the recommended books for your preparation-

1- Engineering Mathematics- Advanced Engineering Mathematics by E.Kreyszig

2- Electric Circuits- Transient Analysis Of Electric Power Circuits by Arieh L Shenkmann, Circuit Theory: Analysis & Synthesis by Abhijit Chakrabarti

3- Electromagnetic Fields- Elements of Electromagnetics by Mathew N. O. SADIKU, Engineering Electromagnetics by William H. Hayt

4- Electrical Machines- Electrical Machinery by P.S Bimbhra

5- Power Systems- Power Systems Engineering by Nagrath and Kothari, Power Systems by JB Guptha & CL Wadhwa.

6- Control Systems- Control Systems Engineering by Nagrath and Gopal

7- Electrical and Electronic Measurements- Electrical and Electronic Measurement and Instrumentation by AK Sawhney

8- Analog and Digital Electronics- Electronic Devices and Circuit Theory by Boylestad, Digital Design by M.Morris Mano, Integrated Electronics : Analog And Digital, Circuits And Systems by Christos C. Halkias, Chetan D. Parikh Jacob Millman

9- Power Electronics- Power Electronics by MH Rashid, Power Electronics by P.S.Bimbhra