Dear Aspirant,

For applying in Anna University ,there is no entrance test.It is completely based on 12th board marks. For admission in BE or BTech you need to apply for TNEA counselling ,then they prepare the merit list and call for offline seat allotment.For admission in ME ,MTech candidate need to qualify TANCET .And NATA exam for B.arch. For more detail,you may check the link below.I hope it helped.

https://engineering.careers360.com/articles/tnea-application-form