Electronics and Communication Engineering

https://googleweblight.com/i?u=https://www.shiksha.com/b-tech/resources/ap-eamcet-college-predictor&hl=en-IN
You can find which college you will get over here. Please go through this link.
Good luck.

Andhra Pradesh-EAMCET 2018 College Predictor
Use your Andhra Pradesh-EAMCET 2018 rank to see where you can get admission at the link provided below:
See the courses, colleges & rounds you may crack
The result is based on admissions data of Andhra Pradesh-EAMCET 2017
Get resources & insights on colleges & courses
https://www.shiksha.com/b-tech/resources/ap-eamcet-college-predictor.

Yes, with this rank you will definitely get admission for ECE. You have secured a good Rank. Last year, 1900 ranked students got admitted so you can definitely get admission.

Yes, your rank is good enough to get CSE, ECE, mechanical or whichever branch you want in any college in Andhra Pradesh. You can try to get admission in a reputed college as you can get admission. But, I would suggest you take mechanical branch as there is a lot scope in future.
Good luck.

If you want to do your graduation from AU campus meritoriously, you have to get your rank below 2000. Your rank is very good for getting any branch in AU. You can take CSE or ECE whichever you want. But I would suggest you take admission in CSE as it has a lot of scope in future.
All the best.