There are many colleges but you can consider below names -

Indian Institute of Technology, [IIT] Delhi
Indian Institute of Technology, [IIT] Kharagpur
Indian Institute of Technology, [IIT] Roorkee
Delhi Technological University, [DTU], New Delhi
College of Engineering Anna University, Chennai
Indian Institute of Technology, [IIT (ISM)] Dhanbad
National Institute of Technology, [NIT] Surathkal
National Institute of Technology, [NIT] Warangal
Thapar University, Patiala
Veermata Jijabai Technological Institute, [VJTI] Mumbai

For more information about M.Tech, you can go through below website -

http://www.engineering.careers360.com


Good Luck!!!