Hi,
For studying M.Tech in mechanical engineering you will need to possess a Bachelors degree certificate in engineering, technology or any equivalent examination and should have a valid GATE score card in ME by 1st August of that year. Then you need to fill up the application form by visiting the site http://admissions.iisc.ac.in/web/SelectUGPG.aspx and registering yourself to fill up the application form. The final admission will be based on GATE score followed by aptitude test and interview.
For a detailed procedure of how to fill up the application form you can check the "online application instructions" section from the link below
https://www.iisc.ac.in/admissions/m-tech-m-des/#targetname|ffs-tabbed-215|ffs-tabbed-33
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