Hey Hemant!

The admission to DU B.Tech 2019 will be based on common exam called Delhi University Entrance Test (DUET).

It is an offline entrance exam of 2 hours conducted for admission to DU B.Tech 2019 tentatively in third week of June.

Total number of 40 seats will be offered to the shortlisted candidates for DU B.Tech 2019. 

So you can take admission in DU if you lie in the top 40 shortlisted candidates.

Hope this helps :) 

Best of luck!