I applied through university. The process took 2 days. I interviewed at VEDA IIT (Bengaluru) in Feb 2017
Interview
Day 1
9-10 AM: Prelims: Basic questions from Digital electronics, Electronic Devices, Microprocessors and Aptitude. Most of the questions were Fill in blanks.
4-6 PM : After prelims students are shortlisted. Questions from Digital, C Programming and Aptitude.
Day 2
Interview of shortlisted candidates. They will ask you question which you were not able to solve in Mains after giving you some clue or how to solve it.
Interview questions [1]
Question 1
1. Realize (A xor B)C + A'BC using 2:1 MUX
2. Question on Number System.
3. Counters and FSM.
4. Basic C questions.
I applied through other source. I interviewed at VEDA IIT (Guntūr) in Sep 2019
Interview
I attended the written test it is some what difficulty for me because if you good in concepts it is not sufficient we have to apply same concepts in different problem in correct way and solve them in a smart way compair to others that what I had learn so my advice is to do more problems in different ways
Interview questions [1]
Question 1
They asked more question on digital and microprocessor