Dear Rajwin,
Total number of duration for this course is 4 years.
To check the top colleges in Electronics and communication Engineering you can refer below
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
Manipal Institute of Technology, Manipal
Delhi Technological University, Delhi
To know more about the course you can refer below link
https://engineering.careers360.com/electronics-and-communication-engineering-0
Good Luck!!
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