hello aspirant,

YES, you can apply for PGECET for geoengineering and geoinformatics after 3 year graduation in any course, in B.E. civil engineering. The eligibility criteria for PGECET is as follows :

A candidate who has passed Recognised Bachelor's Degree of minimum of 3 years duration examination or equivalent examination and obtained an aggregate minimum of 50% marks in all the years of the Degree Examination is eligible to appear for PGCET 2022 exam

Further, to know more about the PGECET Exam, you can follow the below mentioned link to know more : https://engineering.careers360.com/exams/ts-pgecet

I hope that this will help.