Hey Aspirant, you have managed to get quite a considerable score in GATE 2019 exam.

With the score of 736 out of 1000 in Mechanical Engineering, there are possibilities that you may get admission in one of the Old IITs.

If we look at the previous year cutoffs of IITs like IIT, Delhi and IIT Bombay then it can be observed that cut off for OBC category in 2018 was 650 for IIT, Delhi and something around 540 for IIT, Mumbai.

So, it can be assumed that you may get admission in your preferred branch this year.

For more details about the previous year cutoffs for other IITs and NITs please refer to the link below:

https://engineering.careers360.com/articles/gate-cutoff

Hope this Helps.