hi harsh ,

yes , you are eligible for the GATE examination having a b tech course as mechanical  and automation engineering.

GATE 2019 Eligibility : Bachelor's degree holders in Engineering/Technology (4 years after 10+2 or 3 years after B.Sc./Diploma in Engineering/ Technology) and those who are in the final year of such programs.

all the best

Hi Harsh,

Yes, you are eligible for GATE as one needs to be an engineering graduate regardless of the stream.

Good Luck!