My university doesn't interview, unfortunately. A number of the staff would love to. If we did, the following are typical questions we'd ask:
(i) we'd give you an equation to differentiate;
(ii) we'd ask you how a satellite stays in orbit;
(iii) we'd ask you what your favourite aircraft is, and why.
Most university academics can't tell one end of an aeroplane from another, though (both ends are pointy, you see). They'd be better off with boats, where at least one end is blunt.
Being keen on aircraft therefore, you're on a winner before you start......