Hello,

The cut off for the course varies according the college as well as your category. One of the best engineering colleges in Kerala having a course in Applied electronics and instrumentation is College Of Engineering Trivandrum(CET). Assuming you are from the general category, it would be difficult for you to get a seat for applied electronics and instrumentation in CET, since the cut off for general rank for the year 2019 was 2569. However you can look for other  colleges having the same course for the next rounds of allotment. Some of the colleges where you have a chance of getting a seat for applied electronics and instrumentation is:

Rajagiri College Of Engineering And Technology, Kochi

College Of Engineering, Chengannur

LBS Institute Of Technology For Women, Thiruvananthapuram

Federal Institute Of Science And Technology, Ernakulam

Hope this helps you

Good Luck