Hello Aspirant,
The three of the colleges are all very good in terms of faculty and other facilities. Kannur engineering college is a very good engineering college. This college is highly rated. It is a government college and I always suggests to go for a government college over private college.
https://www.google.com/amp/s/www.careers360.com/colleges/government-college-of-engineering-kannur/amp
For more details visit the above link.
Nss palakkad is one of the best private engineering college in Kerala. Placement record is decent. Here I'm sharing a link from which you can get detailed information about this college.
https://www.google.com/amp/s/www.careers360.com/colleges/nss-college-of-engineering-palakkad/amp
Last but not the least MA college kothamanglam is a good college to study Arts. The campus is surrounded with greenery, infrastructure is good. Placement cell of this college is very active. Overall is it a good college.
https://www.google.com/amp/s/www.careers360.com/colleges/mar-athanasius-college-kothamangalam/amp
The above link will help you to get correct information.
Now comparing all three I think Nss Palakked would be the best choice if you really interested to do engineering. Rest is on you.
Hope it helps
All the best!

Hello Prajeesh,
Kannur engineering college, NSS college palakkad and MA college all the three colleges are goverment college or government aided college.
Government college of engineering, Kannur
http://www.careers360.com/colleges/government-college-of-engineering-kannur
You can visit the link given above for the fees, facilities and placement details of the college.
NSS College of Engineering, Palakkad
http://www.careers360.com/colleges/nss-college-of-engineering-palakkad
You can visit the link given above for the fees, facilities and placement details of the college.
MA College, Kothamangalam
http://www.careers360.com/colleges/mar-athanasius-college-kothamangalam
You can visit the link given above for the fees, facilities and placement details of the college.

Now, you can compare all the three colleges and find the best one. I hope you will do the same.
All the Best .