Helo Dear Aspirant, This year 1,38,410 students registered for JEE Main paper 2 and 1,12,679 student gave the exam.Last year 1,45,386 students gave the JEE Main April paper 2 B.Arch paper.
So based on these facts if you got 84% then your rank will be approx 20 to 25 thousand after JEE Main April paper 2.
Last year closing cutoff rank for Female SC category candidate having Home state quota was 11,698 for NIT Trichy.
Sadly i would say that there is very less change that would get B.Arch in NIT Trichy.
For getting seat in B.Arch in NIT Trichy your percentile should be above 93.
So, Try to increase as much percentile as possible and If you have any queries regarding this then you can ask in the comment section.

Dear Aspirant, If you got 84 percentile in JEE Main January your rank based on this percentile after JEE Main April will be around 1.7 lakh to 2 lakh and your SC rank will be around 10 thousand.
Last year closing rank cutoff of NIT Trichy for SC Female candidate of Home state for different branches are

Chemical- 1,79,373

Civil- 1,62,121

Computer Science (CS) - 49,458

Electrical and Electronics Engineering - 1,20,905

Electronic and Communication Engineering - 76,374

Instrumentation and Control Engineering -  1,57,714

NIT Trichy

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