If you have scored a total of 40.03 marks out of 100 and have secured a rank of 5,743 with a score of 483, then there is no reason to believe that you won't get an admission in NIT Calicut in Thermal Science.

You have almost full chances of getting Thermal Science at National Institute of Technology, Calicut according to the cut-offs of previous years, depending on how your interviews go. Hope I have answered your question. All the best!