Out of the 300 seats, 150 seats are allocated through the state counselling process called ACPC and rest through All India Quota and NRI quota( 5%) for which a rank list is prepared based on the JEE main.
The admissions are done based on jee main rank(60% jee marks+40% +2 marks).The cut off rank for DAIICT every year changes. The JEE main ranklist according to past trends lies around 15000.
For general candidate students DAIICT All India cut off rank in 2017 was around 15835 to 15883. You need to score more than 175 marks in your exam in order to get this college.
Hope it helps.