Hello dear, 

Bharathidasan university is a government university approved by UGC and accredited by NAAC A. You have to give TANCET to take admission in it. 

All the best;

TANCET scores ar emust for Admission into Bharatidasan University TRICHY for Mtech courses.

https://engineering.careers360.com/colleges/bharathidasan-university-tiruchirappalli

For Integrated Btech and MTech, studnets need to give seperate entrance test conducted by University and then an personal interview.

http://www.bdu.ac.in/schools/engineering_and_technology/set/admission.php