Greetings dear aspirant

Firstly, congrats on successful completion of your examination. The cut-off trends keeps changing every year and it depends on the number of students attempting the exam, difficulty level, number of available seats, etc. With 187 marks, its unfortunately not possible to get any branch in PSG Tech, Coimbatore, as is a huge competition for these seats and cutoff's are very high too. The cut-off of CSE branch at PSG Tech was 199 in the year 2017. You can try applying for other colleges where you have the confidence of securing a seat

https://www.careers360.com/colleges/psg-college-of-technology-coimbatore/cut-off

You can have a detailed look at the cut-off trends from the above link.

Hope I've cleared all your doubts!!

All the best for your future endeavours