Hi Gokul,
                 I think you're asking for TNEA counselling process. Assuming that, here are the important dates for TNEA 2019.

• Releasing of rank list : 4th week of June
• Counselling will start from : 3rd week of July

Hello, the process for getting admission into engineering courses in Tamil Nadu is TNEA. It is a counselling process that requires only your plus two marks.                
The tenative dates for counselling for TNEA will start in the first week of May.
Registration and application process will be available only through online mode.
It depends only on your 12th standard marks and NO entrance exam are there,  as it is a purely counselling process.