For NSIT jee mains cut off rank (Closing Rank) of last years for obc category  is 

1.Biotechnology     18554

2.Computer Engineering  4831

3.Electronics and Communication Engineering  10703

4.Information Technology  7269

5.Mechanical Engineering  13597

For DTU

1.Biotechnology     16144

2.Computer Engineering  6705

3.Electronics and Communication Engineering  8221

4.Information Technology  7933

5.Mechanical Engineering  13349

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All the best dear