Sir I am currently studying in diploma engineering in mechanical production engineering. Is am eligible to take admission in Nit.
To take admission in National Institute of Technology, you have to give jee mains.
I am enclosing here the jee mains brochure.Go through it and then take the informed choice.
https://jeemain.nic.in/WebInfo/Handler/FileHandler.ashx?i=File&ii=88&iii=Y
Open this link and go through it