Hello Manish,
To get admission in Indian Institute of Technology, Delhi you must qualify JEE Advanced with good rank. For different branches the cut off's are different. Toughest competition is for the computer science and engineering branch. Last year, the opening rank for this branch for OBC category was 38 and closing rank was 65. To get this branch you must study very hard.
The cut off's for branches like textile technology goes high up to 3258 in Indian Institute of Technology Delhi while branches like Biotechnology and Biomedical engineering had opening and closing rank of 1849 and 2574 respectively last year.
For Mechanical engineering branch the opening rank was 327 and closing rank was 547 while electrical engineering branch started at 102 rank and ended at 271.
For chemical engineering, the opening rank was 547 and closing rank was 1148 last year. Likewise civil engineering started at 743and ended at 1224.
So from the above statistics we can say that if only you want admission in Indian Institute of Technology Delhi, and branch is not a matter of concern then rank upto 3000 can get you a seat there, but if branch does matter to you then you must study very hard.
All the best.
Candidates can check B.Tech Cut off for Top IITs & NITs here.
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