Dear candidate

EAMCET is a local exam you can enter into any college in Andhra Pradesh by writing AP EAMCET and in Telangana by writing TS EAMCET depending on your rank and category, as they are local examinations you cannot enter into a college in Tamil Nadu via EAMCET so, for entering into Tamil Nadu Engineering colleges you need to write Tamil Nadu Professional Courses Entrance Examination(TNPCE).

All the Best

Hope this Information is Helpful.