I applied through college or university. The process took 2 weeks. I interviewed at Lutron Electronics (Philadelphia, PA) in Sep 2017
Interview
At the beginning you should make a introduction to yourself and your project, then they will give you some technical questions, finally you can ask them a few questions about the company.
Interview questions [1]
Question 1
a question about simple LED driving circuits design, and also do some calculations about the current and voltage that is needed for the circuits. Finally a question for circuits implementation.
I applied through college or university. The process took 1 day. I interviewed at Lutron Electronics in Jan 2007
Interview
Though the interviews themselves weren't too difficult the process was very grueling. I was put in a room for an entire day while 5 sets of interviewers (1-2 at a time) came in and grilled me. Some were technical interviews, one was behavioral, one was general critical thinking. The plant visit both at the R&D site and the manufacturing sites were fun and interesting but overall they made it a very long day.
Interview questions [1]
Question 1
Approximate the electricity usage by the entire US in a year.