M.Tech

If you are interested in studying for gaining knowledge then you can go for it, but it would be a lengthy programme you can just skip M.Tech.

Yes, you can apply for defence job after integrated M.Tech degree. Good luck.

There are many websites providing previous year papers of GATE entrance exams. You can visit the official website of GATE, NPTEL or coaching institutes like Kreatryx or Made Easy. If you are from the electrical background, then you should purchase the previous year's problems of GATE exam from Kreatryx. They will provide you with the best solutions and explanations also.
Best of luck.

In my opinion if you wants bright and calm future then start preparation for UPSC Civil services and IES exam because once you enter here you will get the time bond career promotions and other related benefits. While in private sectors you may got the more money but isolation and busy life which are the negative sides.

Placement enrollment is good. Minimum package is 3.5 and it can go up to 40 lacs per annum.
ALUMNI
Very much helpful and caring. They help us in every way. Placement or any other matter.
FACULTY
Overall very good. Both types of faculty members are there. Very highly qualified teachers to new teacher. Other faculty members also come to take classes.
CAMPUS LIFE
The campus is very good. It has its own wildlife. Camping sites lakes and much more. Students of all departments are also very much interactive.