My gate score is 492 and rank is 5459 in ECE and category is OBC,do I get any NITs?

As per your score and previous year cutoff, the colleges you get in first round are:-

National Institute of Technology Sikkim Microelectronics & VLSI Design

National Institute of Technology Meghalaya VLSI & Embedded Systems

National Institute of Technology Uttarakhand Communication Systems

National Institute of Technology Manipur VLSI Design & Embedded Systems

National Institute of Technology Agartala Communication Engineering

National Institute of Technology Nagaland VLSI Systems

National Institute of Technology Arunachal Pradesh VLSI Design & Embedded Systems

National Institute of Technology Nagaland Communication Engineering

National Institute of Technology Mizoram Microelectronics and VLSI System Design

Shri Mata Vaishno Devi University Katra School of Electronics &Communication Engineering Electronics and Communication Engineering

To know more about your chances of getting other colleges check out the PSU/college predictor link below:

https://engineering.careers360.com/gate-college-predictor