1. Machines - p.s.bimbhra
2. Network - notes
3. Control system - I.j. nagrath
4. Power system - vk mehta
5. Power electronic (optional) - ps bimbhra
apart from that solve as many previous year questions papers u can and go through madeeasy and Acedemy notes ( no other institution papers rather than this )
if you want help or want PDF than here is my mail abhishekkongari786@gmail.com