Electronics and Communication Engineering

Please visit this site first
https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor&ved=2ahUKEwjd0NzModzhAhUZfSsKHfLtA6UQFjAAegQIBBAB&usg=AOvVaw1N9BzFtyUCP4JU-2UQHQ0H

Electronic and communication is a branch in engineering that includes both electrical and satellite, mobile communication. It has high scope in he fields of robotics and communication students can sit in the placement cell of CSE and ELECTRICAL.

Bachelor Science in Hotel Management-
B.Sc. In Hotel Management is a 3-year full-time undergraduate course, the minimum eligibility for which is higher Secondary Certificate (10+2 qualification) with a minimum aggregate score of 50% in best four relevant subjects. So, you can apply for it.
Best of luck.
Regards.

Yes, you can easily get admission in these colleges with this score and under this quota. But, you should try for the other good colleges of Delhi like DTU and other private colleges as your score is quite good. As DTU is better than NIT Delhi.

Total fees of BE in Electronics and Communication Engineering in Siddaganga Institute of Technology is INR 2.38 Lakhs:
https://www.shiksha.com/b-tech/course/b-e-in-electronics-and-communication-engineering-siddaganga-institute-of-technology-tumkur-189256

Yes, you may have a chance of getting into NIT-Warangal. Based on previous year cut-offs, it is quite possible that you can get it but make sure you keep a backup in your hand before waiting for 2-3 round of counselling.

Yes, you can apply there, it will require only Bachelor degree in any steam. All the best.

As per University eligibility criteria a Bachelors degree in any discipline in Science/ B.A. Geography/ B.E. Civil Engineering / Electrical and Electronics Engineering with a minimum of 55% of marks. + Entrance test.
So, graduate with ECE are not eligible for this program.

There are very fewer chances for you to get even a seat in the college as per previous records. But, the future may change, so wait for the final cutoff to appear.

Go through the link below –
https://www.shiksha.com/b-tech/colleges/distance-correspondence-b-tech-in-electronics-communication-engineering-colleges-india