Mechanical aptitude test.

92.

Some ambiguus questions. Either "suction" or "atmospheric pressure" draw air into a cyinder. And petrol is easier to ignite with a spark, diesel is easier to ignite with heat.

I assume that 92 translates as 4 wrong. I'd like to know which!
 
As you take the test, level with the submit button but on the opposite side of the page is a circle with 2 rectangles inside. That's a button which can show or hide the list of questions, and mark them as you go.
 
92% ... but I was on the phone sorting out a directors laptop at the same time ... /forums/images/graemlins/tongue.gif
 
Q44 is a load of bollocks as well - they show a venturi, which can actually act as quite a useful vacuum pump if the flow rate is high enough. So 2 possibly correct answers on that one as well. I suppose we do have to make allowances for the fact that it's American. /forums/images/graemlins/smile.gif
 
also, isn't "PSI" a pressure unit, rather than a force unit ?

in the piston example, the question goes "a Force of 14 PSI is applied over 50 sq.inches, which force acts on the lower part of the piston which measures 2sq.in"
and the possible answers are all expressed in PSI.. /forums/images/graemlins/ooo.gif
 
Well spotted - that would make the actual force on the piston 700 lbs, and the force on the smaller one 25 times that.
Congratulations on your 1000th post by the way Roberto!!!
 
I think the person making the quiz lives in side books and not the real world.

Q11: You don't turn a spur gear with a worm. Try a worm wheel.

Q12: It does not mention which way A is turning like all previous questions.

Q15: They never mentioned that they were in some fictitious place with no friction!

Q24: The switch and the battery are in parallel. They never said look at just the bulbs.

Q37: I do not think they meant speed! Oscillation frequency maybe?

Q38: Direction relative to each other or relative to the fan?

Q41: I think they have confused pressure and force. Hard to have a force in PSI!

Q48: Air moves because of a difference in pressure not just because one side pushes

I score them 84%.
 
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Congratulations on your 1000th post by the way Roberto!!!

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oh thanks /forums/images/graemlins/smile.gif, I hadn't noticed; it took six years, that means a rather poor PPW of roughly 3

after PSI, PPW is the newly introduced unit of forum fidelity: Posts Per Week /forums/images/graemlins/laugh.gif
 
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