To take admission in ECE branch in engineering you have to appear for the entrance exam.

You should try to get admission in top colleges which are offering ECE to get good placements.

You can check the list of top colleges below

Government

Indian Institute of Technology, Delhi

Indian Institute of Technology, Bombay

Indian Institute of Technology, Kharagpur

Indian Institute of Technology, Kanpur

Indian Institute of Technology, Madras

Indian Institute of Technology, Roorkee

Delhi Technological University, Delhi

Indian Institute of Information Technology, Hyderabad

Motilal Nehru Institute of Technology, Allahabad

National Institute of Technology, Tiruchirappalli

PrivateManipal Institute of Technology, Manipal

Birla Institute of Technology and Science, Pilani

To take admission in these colleges you can appear in JEE (Main+Advanced) to take admission in NITs/IITs/IIITs.

In order to be eligible make sure you should have 75% marks in your board exam or you are in top 20 percentile.

For SC/ST you should have 65% marks.

DTU takes admission through JEE Main. Couselling is conducted through JAC Delhi.

To take admission in private colleges you can appear in BITSAT, VITEEE and Manipal.

Good luck!!