- Understading behind SPC, how to calculate Cp,Cpk,Pp,Ppk and where to apply each. - Understanding behind OEE. What can be done to improve OEE of a production line. - How to calculate takt time. - I have mentioned that I'm familiar with robots and PLCs, they asked me what my level of understanding behind those concepts. - What are 8D and Lean tool; such as 5 WHY, Bonefish etc. explained all those tools one by one. - Could you please give an example where and how did you used one of those tools such as 5 why. I gave the example and interviewer asked me how I evaluate the results of it. - What kind of PLCs and PLC softwares did you used before? I told them that I worked with s7-1200 PLC and siemens tiaportal before but I'm not very familiar with those PLCs instead of doing simple few projects. - They asked me what are the processes that my current company has to produce part. I explained all processes one by one. Those are the all questions that I remember as most important, all the other questions were about my previous experiences.