Just answer things honestly and if you don't have experience in that area I think it is ok. Explain your thinking and answer questions thoroughly. Less
Reviewed past experience in the morning. In afternoon was given a design problem and 1 hour to come up with a solution. Presented results to team and fielded questions.
Both interviewers' first technical questions was to solve a problem or explain a concept based on basic physical principles. The second question asked to generate ideas to solve a hypothetical client request, and discuss these ideas in a short feasibility / cost / reliability assessment.