Dear Sidhant, if we talk about best IITs which is best in the mechanical field are - IIT Madras, Delhi, Bombay, Kanpur.

if we talk about NITs - NIT Rourkela, Trichy,surathkal

if we talk about private college/university - VIT, BITS Pilani, NSIT, Thapar Institute, DTU.

As per my experience dear, today world is learning through a digital platform and the main purpose of college is providing placement companies for their student in their college, there are lots of digital platform available through you can learn lots of things by expertise.

All the best dear 

Hello Sir. The best government colleges for mechanical engineering are : IIT Mumbai, IIT Kharagpur, IIT Kanpur, IIT Guwahati, IIT Madras. The best private colleges for mechanical engineering are : PSG College Of Technology, SRM University, MIT World Peace University, KIIT University.