I applied through other source. The process took 1 day. I interviewed at ISRO Telemetry Tracking and Command Network (Bengaluru) in Oct 2018
Interview
I went for job fair conducted in one college in Bengaluru, I went and gave my resume initially they verified my all original documents and calculated total percentage and then called for interview.
Interview questions [1]
Question 1
1.) about BE/B.Tech Project.
2.) about analog communication.
3.) what is AM, FM, PM & its difference, plot a graph for each etc.
4.) basics of power electronics.
5.) and many more