the one with the venturi, what would "a" and "b" do?
mechanical aptitude test...
Senior User
Joined: Jan 2005
Posts: 130
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82 i srewed the pully questions and the fan and engine.
As far as the electrical - the middle light will not come on because light bulbs are loads (resistance) and by closing the 2nd switch you create a path around the light bulb with less resistance than the bulb itself. Make sense?
As far as the electrical - the middle light will not come on because light bulbs are loads (resistance) and by closing the 2nd switch you create a path around the light bulb with less resistance than the bulb itself. Make sense?
Junior User
Joined: Sep 2006
Posts: 86
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Originally Posted by Ironhorse7
Yeah, that's like saying that ice doesn't "cool" the beer, it absorbs the "heat" out of it...
So I guess next time I'm in Wally World I'll ask for a "Beer De-Heater."
So I guess next time I'm in Wally World I'll ask for a "Beer De-Heater."
And for the NA engine question think of it like this. When the piston is not moving the pressure is the same inside and outside the cylinder, that means that the air inside the cylinder is trying to push to the outside just as hard as the air outside is pushing in. After all pressure is a measurement of how hard something is pushing against something else. When the piston goes down it reduces the pressure inside the cylinder. this means that the air inside the cylinder is still trying to push its way out, it's just not pushing as hard as it was. Since the air trying to push its way out is pushing with less force and the air trying to push in is pushing with the same force the outside air is now pushing with more force than the inside air. Therefore the force of the outside air pushing in will overcome the force of the inside air trying to push out and air will move into the cylinder. At no point in time is anything ever pulling into the cylinder.
These may be technicalities but this is a technical test after all.
Last edited by ec_fritz; Oct 14, 2007 at 07:59 AM.
Postmaster
Joined: Jul 2003
Posts: 2,711
Likes: 2
From: Pittsburgh
Problem 7 is wrong, 31 is wrong, 38 is too ambiguous to answer as is 49.
I don't like taking tests where i have to figure out what they want to know and not what the correct answer actually is.
I was able to read through it all and got 100 on it, but all at the same time you'd think a technical test would be more technically correct.
Justin
I don't like taking tests where i have to figure out what they want to know and not what the correct answer actually is.
I was able to read through it all and got 100 on it, but all at the same time you'd think a technical test would be more technically correct.
Justin
Post Fiend
Joined: Apr 2004
Posts: 6,473
Likes: 4
From: Lafayette, IN
I noticed 31 was wrong, but since the right answer wasn't a choice I figured out what they were after. They wanted you to see that box B was 6 units out from the fulcrum and box A was 2 units out, so box B would have to weigh one-third of box A to balance. However, each box was 2 units wide, so if you went by their center of gravity, box A was one unit out and box B was 5 units out...
Jason (92%--blew a pulley question or two and the piston suction question)
Jason (92%--blew a pulley question or two and the piston suction question)
Lead Driver
Joined: Jul 2004
Posts: 5,947
Likes: 63
From: in the woods of MA
98 for me, but some of the questions are... questionable? The one with the offset fulcrum is just wrong - they want you to count off 2 lengths on one side vs. 6 on the other for a ratio of 6:2, or 3:1 for an answer of 300:100. But the weights span two lengths, and the action of the weight will be as if it was applied at a single point under the center of gravity of the weight, so the actual ration would be 5:1, with the correct answer being 300:60. But that wasn't one of the choices. Got any physics teachers out there to sanity check me on that?
The fan one was confusing (to me, anyway) - it looked like they were looking for result the action of the air movement from one fan at the other, but I guess they were looking for some kind of fluid coupling? And it wasn't clear
what "same" and "opposite" meant? Same from one point of view, or same from the point of view of each fan.
Fun test though...
The fan one was confusing (to me, anyway) - it looked like they were looking for result the action of the air movement from one fan at the other, but I guess they were looking for some kind of fluid coupling? And it wasn't clear
what "same" and "opposite" meant? Same from one point of view, or same from the point of view of each fan.
Fun test though...
Lead Driver
Joined: Jul 2004
Posts: 5,947
Likes: 63
From: in the woods of MA
Originally Posted by jroehl
I noticed 31 was wrong, but since the right answer wasn't a choice I figured out what they were after. They wanted you to see that box B was 6 units out from the fulcrum and box A was 2 units out, so box B would have to weigh one-third of box A to balance. However, each box was 2 units wide, so if you went by their center of gravity, box A was one unit out and box B was 5 units out...
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Senior User
Joined: Jul 2006
Posts: 148
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From: Kahaluu, Hawaii
82%- guess im not as smart as i thought i was
I always like tests like these in the beginning, cuz i think i'll prove to myself how smart i am, then i get my score and i'll bitch and moan about how the test is all theory, and how the questions are wrong.
i seem to do alright in the real world though, just like my ASE's, passed 'em all my first time, but just scraped by on all of them when i thought i should have Aced some of 'em.
I always like tests like these in the beginning, cuz i think i'll prove to myself how smart i am, then i get my score and i'll bitch and moan about how the test is all theory, and how the questions are wrong.
i seem to do alright in the real world though, just like my ASE's, passed 'em all my first time, but just scraped by on all of them when i thought i should have Aced some of 'em.
The Pacifier
Joined: Jan 2003
Posts: 8,245
Likes: 7
From: Cloverdale, BC
I'm pissed. I only got 90%. That steering gear question wasn't clear. And the "suction" question sucked. As for the other three I got wrong, I just read the questions too quickly.
Last edited by bigrigfixer; Oct 14, 2007 at 11:26 PM.
!["Beemer Nut"'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23bc5285' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>"</text></svg>)
Post Fiend
Joined: May 2004
Posts: 5,277
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From: St George, SC I-95
86% I guessed on some of the gear questions. I found the electrical questions pretty easy. There were some hard questions though. Im going to test my sisters boyfriend after supper. Hes the "high and mighty mechanic" who graduated with honors from chevy tech school. Wooptie ****in dooo! He'll probably say something to the affect of "Chevrolet doesnt make me take a test like that."
