Hello Aspirant,

M.Tech Ph.D. is an integrated dual degree curriculum that incorporates two postgraduate level progressive degree courses, M.Tech and Ph.D., into one academic programme.
The integrated M.Tech. Ph.D. course comprises a four-semester M.Tech programme, with a Ph.D. programme offered upon completion of the M.Tech programme, contingent upon meeting the minimal grade requirements.

You can get the details from the below link:

https://www.careers360.com/courses/mtech-phd-dual-degree

ALL THE BEST