NIT Warangal - National Institute of Technology

which clg plz write

There is no such Institute as NSIT Warangal. NSIT is in Delhi and NIT Warangal is in Warangal.
As in there is no management quota in both of them. It is solely dependent on your JEE Main Rank.

CSE NITT is the better option

Depends on the branches you are getting in each of them and which branch you want.To get better guidance you can specify your rank and other details so I can guide you accordingly but in general I can say this that all are good options but among them for CSE/IT branch ISM Dhanbad and IIITA will be better options considering the placement and the reputation.

It depends on your institute. Some institutes don't have internal sliding. Some do have it and Its either at the beginning of first year or the end of it. A notice will be given to you by your college. You will have to fill up a form and depending on the vacancy and your grades you might or might not get a change of branch.

If you would like to go abroad then EEE is good choice. Because there is more scope for EEE in Gulf countries. Compared to ECE there is more scope for EEE everywhere. It depends on your interest also.

This is is the age of Electronics and telecommunications. ECE graduates can be employed in Electronics, Telecom and IT companies both in private and Government sectors. Opportunities for ECE grads will continue to improve in near future.

if you consider placements and salary wise, ece dominates, it has got jobs both in private as well as government sector. eee is an ever green branch, since it doesn't get affected by recession. it has got plenty of jobs mainly in government sector. However I will suggest you to choose your interest. all the best! !!!