The exact prediction would be tough as JEE Advance Exam Pattern changes every year, The cutoff also differs for the admissions into the participating IITs as per the category, course and college selected by the candidates. I would suggest you to check the previous year cutoff of each IIT branches wise to take an Idea about with the given below link.

https://engineering.careers360.com/articles/jee-advanced-cutoff

Good Luck!

Hii Viswa..cutoffs for 2018

For electrical engineering

general- opening(43), close(265)

obc- opening(50), close(177)

sc- opening(17), close(76)

st- opening(14), close(45)

For mechanical

General- opening(305), close(848)

obc- opening(117), close(449)

sc- opening(38), close(180)

st- opening(11), close(67)

For more details visit- https://engineering.careers360.com/articles/jee-advanced-cutoff-for-iit-bombay

Hope this helps you. All the best.