I got 19, mostly as a matter of luck because the test isn't really fair in that more information is required from the question to make a correct choice. For example, the answer to the question about the direction of a fan's rotation would depend upon which side of the fan the observer uses to determine which direction the fan is turning.
Dan
The direction of any electric motor is determined by looking at the shaft end of the motor.
Of course a double shafted motor turns in both directions!
22.
I've seen double-shafted fans, used to draw air out of two seperate rooms into an outflow pipe.
Of course, the direction a fan rotates is completely arbitrary. It only happens that motors are more often (and therefore more cheaply) made to rotate clockwise. There is no reason whatsoever against fans being made to rotate counter-clockwise.
I scored 22. Surprised me which ones I missed.
The hot dog bun question threw me, of all things. I've always resented that they're packaged in groups of eight, since the hot dogs themselves always come in 10- or 12-packs. I always have leftover buns, which invariably go bad before the (rare) next time I buy hot dogs. When answering the question, I imagined the hot dogs in 8-packs, so assumed the buns came in six. Argh.
The VHF dial threw me because I know there's a Channel 13, but forgot the absence of a channel 1. WHY isn't there a Channel 1
I missed the smoking sign question...no excuse, I simply wasn't visualizing correctly. But, tell me, what's the (supposed) difference between "Towards top right" and "Towards bottom left"? I think this is just to confuse people.
Also, what is a "Standard traffic light"? All over the world there exist traffic lights with green on top. Quite a few places have traffic lights in a horizontal row, rather than vertical. Cultural/geographic bias at work here.
And what is a "Standard car wheel"? I've seen plenty with six or eight lugs. If there were a real "standard", then a tire from one car would fit any other.
"Women's blouse". Hmm. My wife wears my shirts all the time, enough that some of them might as well be hers. None of them have buttons on the left side. On the other hand, I have several waffle-knit shirts I bought from the "women's" section of a store because they didn't have what I wanted in the "men's" area. They have buttons on the left. Are they still "women's" shirts? I've been told that the institution of differently-buttoned shirts came as a result of ambiguity in puritanical laws against cross-dressing. The only way the magistrates could tell the difference was by requiring women to use the (awkward for a right-hander) left side buttons.
The question about the seven dwarfs has me wondering whether the author of the quiz actually watches the movie "everyday". <chuckle>