Hindustan Institute of Technology and Science

I would suggest you go ahead with SRM rather than Hindustan. reason:
SRM has better ranking and infrastructure
Better Professors
Better Placements than Hindustan.
So, I would suggest you go ahead with SRM.

The previous year cutoff for HIT was 97503 in 5 round.
And in first round it was 6974.

Yes, you are eligible according to this rule one should have completed degree in (BE/B.Tech) aeronautical engineering or any other equivalent branches of engineering.

Hello!
As long as you clear your arrears and produce the required graduation mark-sheets (and other documents) before the deadline given by the college, you can study there.

A B.Tech course is available in structural engineering (lateral entry) which has a duration of three years but it is not part-time rather a full-time course.
Good Luck!

B.Tech robotics engineering is a four-year undergraduate programme offered by universities/colleges for specialisation in the field of robotics. Candidates successfully completing 10+2 or equivalent education in Science stream can apply for this course. B.Tech in Robotic Engineering is an interdisciplinary course. Average fee of the course is INR 70,000.

Hello Tanmoy, Yes, a student of mechanical engineering at undergraduate level can surely think of doing PG in aeronautical engineering. Of course the student can not select "avionics" as specialisation. However, any sub-branch of aeronautical engineering related to mechanical engineering can be selected if the student selects appropriate paper of GATE.
Best wishes for your dream of pursuing PG in aeronautical engineering.

Hello Pavan,
Hindustan University has a reasonable reputation in academic circles. If you are getting admission, then there is no harm in confirming it.
Best wishes to you.

Hello Suhail,
These days almost all govt or govt owned organisations use GATE score for screening students whom they want to employ. Some court rulings also has made it impossible for such institutions to take part in placements process. However, you can apply directly based on advertisement on the website.