GATE Scores

Yes, having two Bachelor's degrees, one in BCA and the other in B.Sc. Math, along with a good GATE score, makes you eligible to apply for admission to M.Tech programs in IITs. However, the eligibility criteria for M.Tech admissions vary across IITs, and you will need to check the specific requirements of the institute and the programme you are interested in. Typically, for M.Tech admissions in IITs, candidates are required to have a Bachelor's degree in engineering or technology, or a master's degree in Science or computer applications with a minimum percentage of marks, as well as a valid GATE score. However, some IITs may also accept candidates with a non-engineering background, like in your case, based on their academic performance and other criteria. I would suggest you visit the website of the IIT where you want to apply and check the eligibility criteria for the M.Tech programme you are interested in. It's also a good idea to check the admission process, application deadlines, and other relevant information on the institutes website.

A GATE score of 555 is considered to be a good score, and it can help you secure admission to some of the top engineering colleges in India. However, the admission cutoffs for different colleges vary from year to year and depend on several factors such as the number of applicants, the difficulty level of the examination, and the availability of seats. Here are some of the colleges that you can consider with a GATE score of 555:
Indian Institute of Technology (IIT) Delhi
Indian Institute of Technology (IIT) Bombay
Indian Institute of Technology (IIT) Madras
Indian Institute of Technology (IIT) Kanpur
Indian Institute of Technology (IIT) Kharagpur
Indian Institute of Technology (IIT) Roorkee
Indian Institute of Technology (IIT) Guwahati
National Institute of Technology (NIT) Trichy
National Institute of Technology (NIT) Warangal
National Institute of Technology (NIT) Surathkal
Apart from these colleges, there are several other institutes that accept GATE scores for admission to their postgraduate programs. You can visit the official websites of these institutes to check their admission cutoffs and other related information. Additionally, you can also apply to various PSU jobs that accept GATE scores for recruitment.

Graduate Aptitude Test in Engineering PSU Cut Off (Previous year):
1- NTPC through Graduate Aptitude Test in Engineering Cut Off for Electronics and Communication Engineering:
GATE AIR Rank: 316 for GN, 1047 for OBC NCL, 2359 for SC, 5319 for ST, and 11242 for PwD.
2- NPCIL through Graduate Aptitude Test in Engineering Cut Off for Electronics and Communication Engineering:
GATE AIR Score: 74 for GN, 74 for EWS, 64 for OBC NCL, 64 for SC, and 69 for ST.
3- ONGC through Graduate Aptitude Test in Engineering Cut Off for Electronics and Communication Engineering:
GATE AIR Rank: 864 for GN, 745 for OBC NCL, 682 for SC, 629 for ST, 434 for PwD-HH, and 426 for PwD-OH
4- Power Grid Co. through Graduate Aptitude Test in Engineering Cut Off for Electronics and Communication Engineering:
GATE AIR Score: 50.67 for GN, 47.67 for OBC NCL, 39.00 for SC, and 20.67 for PwD-HI
For getting into PSUs with GATE Electronics and Communication Engineering you need to get a rank below 200. And for this rank, you must score at least 750 in the Graduate Aptitude Test in Engineering exam. I hope this will help you.