With an 83 percentile in JEE Mains as an OBC-NCL female candidate, you might be able to get into some NITs, but likely not the top-ranked ones; you'll likely need to consider lower ranked NITs or other good state-level engineering colleges instead. This percentile can still be useful for gaining admission to several reputable engineering colleges, though the specific branches and colleges will depend on your home state quota and preferred branch.

Key points to consider:

Not enough for top NITs:

An 83 percentile is generally not high enough to secure a seat in the most sought-after branches at top NITs like NIT Trichy, NIT Warangal, or NIT Rourkela.

Consider lower ranked NITs:

You may have a better chance at getting admission to NITs located in less competitive regions like NIT Agartala, NIT Goa, or NIT Manipur.

Home state quota advantage:

Utilize your home state quota to maximize your chances of getting a good branch at a decent NIT.

Other good engineering colleges:

Explore options in state-level engineering colleges, some of which might offer good quality education and placements.

What to do next:

Check previous year cutoffs:

Analyze the previous year's cut-offs for different NITs and state colleges based on your category and home state to get a clearer picture of your options.

Use college predictors:

Utilize online college prediction tool to see which colleges you might be eligible for based on your percentile and category.

Consider private colleges:

If you are unable to secure a seat in a good NIT, explore reputed private engineering colleges with good placement records.