Hi there,
Hope you are doing well.
If with 73 percentile, you have cleared the cutoff then you belong either to SC or ST category.
So, answering the question for both categories:-
 SC:-
Your SC Category rank would be around 13k.
With this rank, there are no colleges available for you.

ST:-
Your ST Category rank would be around 4.5k.
The possible colleges for you with this rank are:-
1) NIT Srinagar:-ECE
2) IIEST Shibpur:- Mining Engineering
3) IIIT Surat:-ECE
4) NIT Agartala:- Biotech
5) IIIT Kancheepuram:- 5 year MTech ECE
6) IIIT Pune:-ECE

Hope it would help.
Thank You.

Hello dear, 

According to your percentile in jee mains your general rank will be close to 3.4 lakh and with this rank you have less chance to get in any government colleges or state funded colleges.