I don't think NIFFT has introduced mechanical as a branch till present so you are uneligible to get mechanical but you can get metallurgy orr manufacturing very similar to mechanical in its course and curricullum here

I would like to inform you that nifft has two renowed brranches 

1. Manufacturing Technology

2.Metallurgical and Materials Engineering

while 2 others are 

3. Enviromental Engineering

4.Foundary and Forge Technogoly