Typical question - how many cycles per minute toilet flush operates...?
Which is precisely why this sort of examination was quite superfluous and useless knowledge. I had the same crap on DC3's - knowledge of the torque strength of the rudder and trim cables - all by engineers who delighted in looking down at new pilots with scorn. Best thing that ever happened was to throw away this so called "chalk and talk" in favour of need to know as against nice to know. Hence computer based training for aircraft systems. Nothing wrong with pilots seeking out extra information to their hearts content - although it was not necessary for the purpose of flying the aircraft safely. It was the trouble-shooting experts on the ground and in the air that resulted in the death of all aboard the MD80 that had the stabiliser jack-screw defect.