Sir i got 668 gate score in ece and im obc nlc category which college i can expect

Hello, congratulations for the result. you can expect a good college.

For finding out in which college  you have a chance you can use the  college predictor tool available on careers 360 website whose link is given below

https://engineering.careers360.com/gate-college-predictor

I hope this helps. all the best.

Hello Yaman,

Graduate Aptitude Test in Engineering (GATE) is a national-level post-graduate entrance exam that is jointly conducted by the seven IITs (Bombay, Delhi, Kanpur, Guwahati, Kharagpur, Madras and Roorkee) and the Indian Institute of Science (IISc), Bangalore for admission to M.Tech programmes offered by government as well as many private institutes.
GATE 2019 was organized by Indian Institute of Technology (IIT) Madras in online mode on February 2, 3, 9 and 10, 2019.

Considering your score, the chances for PSU are less but you can surely get admissions in most of the IITs.

For more information follow the below link:
Https://engineering.careers360.com/articles/psu-recruitment-through-gate
Https://engineering.careers360.com/articles/gate-cutoff-for-iits
Https://engineering.careers360.com/articles/gate-cutoff-for-nits