Hello Sujith ,

According to web results and data for Mechanical Engineering Government College of Engineering , Coimbatore is quite better compared to government college of engineering  , Salem .

1. Both are Public / Government and affiliated Universities .
2. Government college Coimbatore offer some more courses .
3. Average package offered is 5.50 Lakhs for B.tech in Coimbatore Government college .
4. Good Facilities at Coimbatore Government college .
5. 6 students rated 4.4/5 for Coimbatore Government College .

If you want some more information about college then go through these links you get some idea .

Govt College , Coimbatore

https://www.careers360.com/colleges/government-college-of-technology-coimbatore

Govt College , Salem

https://www.careers360.com/colleges/government-college-of-engineering-salem

I think this answer will help you lot .

All the best  !!!!!