Dear Student,

It is compulsory to give the EKT exam if you have done engineering and have chosen any technical ground duty and also compulsory to clear both AFCAT and EKT in the same attempt.

As you have done engineering that's why he is asking to choose one of the EKT branch and if you want to go into flying branch then then there is no need to clear the ERK exam, EKT is only for Ground duty candidates. AFCAT is enough to be a flying officer in Indian Airforce.

Good Luck :)