Dear Shiva, the top Engineering colleges that you can select from are:
KL University
AU college of Engineering
Sri Krishnadevaraya University
Jawaharlal Nehru Technological University
RVR and JC college of Engineering
Sri Venkateswara University
JNTU, Anantapur
Anil Neerukonda Institute of Technology and Sciences
Yogi Vemana University

To know about more colleges participating in AP ECET, pkease visit the official link:  https://www.ecet.co.in/top-engineering-colleges-ap/