is it normal to work as an university professor in engineering but have no real professional experience (in the industry)?

I work as a university assistant professor, I teach engineering-related subjects.
However, I have no real professional experience in engineering (in the industry), I’ve never worked as an engineer or something, and in my country, you can’t work in 2 positions obviously (you can’t have 2 salaries) even if you are teaching at university, the only option is to start your own firm! and I don’t think it’s a good idea to start my own firm (my own business) without professional experience in the field.

BUT, sometimes students ask questions about the real world, about real problems and I find it sometimes "awkward" not to answer their questions because I don’t have professional experience (in the industry).

• so is it normal to work at university without experience in the industry? does not this make me look less compared to the rest of my colleagues?
• if so, what are my best options to get some professional experience in the field?
• finally, how should I answer students’ questions if I stayed without experience in the industry?