There are 2 ways to get seat in Anna University in M.Tech/M.E as you can go through TANCET AND GATE so students having valid gate score are exempted to appear in TANCET.

So to get an idea about GATE & TANCET 2018 and the eligibility criteria, you can go through the below link -

https://engineering.careers360.com/articles/gate

https://engineering.careers360.com/articles/gate-eligibility-criteria

https://engineering.careers360.com/articles/tancet

https://engineering.careers360.com/articles/tancet-eligibility-criteria

Good Luck!!!