It was a campus recruitment for internship position. Written test was conducted which is both objective and descriptive. It was completely technical. For the shortlisted candidates, technical interviews happened. Interviewers were friendly. They asked about my branch of study in B.Tech. As my branch was Electronics and Communication Engineering they asked questions on subjects of electronics branch including analog and digital electronics, signal processing, microprocessors and C programming and some embedded system questions as the position that I have applied for is embedded applications engineer. The questions were from moderate to difficult.

The interview happened for about an hour.

What's the main reason for delays in a successive approximation ADC?

You've been given an analog signal. It's passed through an ADC and a microprocessor and the output bits are given to a LED which gets ON for 1 and OFF for 0. But the network's not working as its supposed to be.How do you troubleshoot this problem other than resetting it.(Not working means the output of LED can be delayed or it may be getting ON and OFF for wrong outputs).