It's not a one question it's many depends upon your experience and field you have worked.
Cad Designer Interview Questions
416 cad designer interview questions shared by candidates
Ask to solve part of machine design problem which require deep knowledge of mechanism component sizing using stress calculations.
What is your biggest weakness?
What is the triple point of water?
How would you create a complex jewelry design while ensuring manufacturing accuracy?
How come that I want a salary 4 times higher than my actual one? (it was a bit over the average in that country anyway)
Why are you the right candidate?
Do you have competency in surfacing
did you ever see one of your projects fail? elaborate on what happened and why.
Why I left my last job.
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