Hello Rachana
In Nit Tiruchirapalli no seats were left in 2019 and 2018 all seats were taken by the deserving candidates in 2017 they were vacant seats so they conducted just one round because only 2 vacant seats were left. You can check for yourself in this link and search for more options too
https://engineering.careers360.com/articles/nit-tiruchirappalli-seat-matrix
Hope this helps you
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