Hello Gaurav, 

To get admission to the B.Tech courses in Delhi Technological University you will need to take and qualify the JEE Mains exam. And also the aggregate of your science subjects in class 11 and 12 must be at least 50% ( 60% for general caste people). You can check out the closing ranks for last year ( for all categories)  here :  https://www.collegepravesh.com/engineering-colleges/dtu-delhi/

Hope this helps :)