ECE books needed for gate preparation

Network Analysis by Alexander,
Network Analysis by roy choudary

Integrated Electronics - Jacob Millman & C. Halkias; Millman & Grabel 

Op. Amps & Linear Integrated Circuit - Gayakwad

Digital Logic & Computer Design - Moris Mano

Signals and System - Oppeheim, Willsky & Nacob 

Automatic Control System - Benjamin C. Kuo

CONTROL SYSTEMS by Norman nice.

Communication systems by simon haykins.

Control System Engg. - Nagrath & Gopal 

Principle of Communication System - Taub & Schilling 

Communication System - A. Bruu Carlson

Electromagnetic Waves & Radiating Systems - Jardon & Balmain; JD Kraus

MATHS any standard book.