As the institute's site says about the admission:

" Out of the total seats 65% (590) are filled up through single window counselling. The seats offered by SSN are filled up within the first few days of counselling with significant high cut-off marks. The remaining 310 seats of the management quota are also offered through merit. 25 seats are earmarked for students who excel in both their academics and sports and 25 for toppers of government rural schools of Tamil Nadu. Apart from this as part of walk-in-walk-out scheme 25 seats are offered to toppers of various state boards with full scholarship."

I suppose there are no entrance exams for admission here,