DTU takes admission through JEE Main rank. DTU has reservation for delhi students . for general category (Delhi region) students cut off will be like:

CSE & IT- 7K-8K rank (marks should be around 180-200)
ECE- 14K-15K rank (marks should be around 170)
ME- 16K-17K rank (marks should be around 150-160)

You can also check DTU last year cut off by below link:

http://www.engineering.careers360.com/colleges/delhi-technological-university-delhi/cutoff

Good Luck.