I applied online. I interviewed at PTTI (Canonsburg, PA) in Sept 2017
Interview
There were several interviewers. The technical round had some simple and some hard questions. The non-technical rounds emphasized whether you are a team player, a good communicator, and above all a person willing to learn.
Interview questions [1]
Question 1
1. Explain Lenz's law?
2. Explain the working of a transformer?
3. What is the corona effect in a transmission line?
4. Explain sag in a transmission line?