Which is better: NIT Durgapur Mechanical/Electrical or NIT Calicut Production Engineering in B.Tech?

Mechanical/Electrical Engineering is superior to Production Engineering because Mechanical engineers can apply for jobs in the field of Production, whereas Production engineers cannot apply for core Mechanical jobs.

So, instead of selecting Production, I will recommend Mechanical /Electrical at NIT Durgapur in this case. 

Here is a brief outline of NIT Durgapur. 

Choose between Mechanical and Electrical based on your interests.