Colleges in Assam

I would like to inform you that IITs and NITs both are very big names for B.Tech in India. In these institutions no matter in which part of India you are from you will do well.

As per the latest 2018 NIRF-MHRD ranking of engineering colleges in India these institutes are ranked as:-
NIT, Durgapur- 47.
NIT, Silchar- 57.
NIT, Hamirpur- 64.
Best of luck.

Hello Jilima,
Normally speaking, one can do MA in a subject only after completing graduation in that subject. This is so since one needs to have a foundation in that subject before embarking on post-graduation studies. Therefore I think you will not be eligible for admission in MA in a different subject than your graduation subject.

Yes, NIT-Silchar is good for instrumentation. You may consider the same.

I don't know much about NIT-Silchar, but JMI is based in Delhi, which gives you enormous opportunities for employment and for doing different types of courses to increase your chances of getting placements. Low fees with good infrastructure, a university with a legacy of almost 100 years. With a huge alum base and decent placement figures, JMI is any time a go-to college.
All the best. Choose wisely.