Some of the questions are bad and I think two of them are straight up wrong. Therefore, I scored a 96%.
http://www.forddoctorsdts.com/quizze...alAptitude.php
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Some of the questions are bad and I think two of them are straight up wrong. Therefore, I scored a 96%.
http://www.forddoctorsdts.com/quizze...alAptitude.php
couple pulley ones got me, the first electrical diagram, the two pipes with water rising (higher pressure on B?), 48 is worded ****ty, the fan one i got but wasnt a good question, i missed the last one and shouldnt have.
88 percent. must be kinda tired, plus i didnt google.
the one about the piston where it asked does vacuum suck the air in or atmospheric pressure push it down...
Quote:
Originally Posted by robertf03
what about it?
i missed the one on the pipes, other than that, it was not that bad.
missed the pipes and a planetary one
i suck at eletrical stuff
which ones do you think were wrong john?
the piston one is kind of iffy....i think it should have been vacuum...
are you guys serious about the piston one. its right, maybe its a little misleading though.
the one with the gears (#7 maybe)
over drive, underdrive- i got
reverse, direct- i mixed up, but im convinced its their fault
the venturi (#44 maybe)
i understand bernoulli's principal and the venturi effect, but i dont think the fluid will rise in B. I understand where they are coming from since most illustrations of this effect show fluid rising in B and higher in A to demonstrate the pressure difference. if fluid rises in B, then that means that P2 is greater than PB and that carburetor, sandblaster, airbrush, etc. isnt going to work.
oh, and the one with the see saw and two blocks where the fulcrum is offset. i dont remember the details but they didnt have the correct answer there. i just figured out what they did wrong when calculating it and picked the answer they thought was right.
What was the right answer on the piston one? I picked atmos pressure but I think its a bull**** question. I didn't see anywhere to view correct answers.
you can go back and look at them. it was atmospheric pressure.
on the gears i see what your saying about reverse and direct because technically the direct one is reversing the direction. however, 'D' is definitely not a direct drive.Quote:
Originally Posted by agjohn02
as for the see-saw one. if they were point loads on the ends, their answer would be correct...
that piston one is BS. Would atmospheric pressure be sufficient to push the piston down and fill the cylinder with air if the crank didn't pull it down? Fawk no, the crank is pulling the piston down, creating a void and vacuum which pulls air in.
If there was no atmospheric pressure, then it would stay a void.Quote:
Originally Posted by uglyota
Quote:
Originally Posted by uglyota
and thats why you are not an engineer. so, does it create more of a vacuum when you put boost on it?
it pushes the piston down and makes the motor spin
And you are :flipoff2:Quote:
Originally Posted by agjohn02
Quote:
Originally Posted by fbronco86
why, because he sucks?!?!
oops, :flipoff3:
Quote:
Originally Posted by fbronco86
as long as you dont count being able to do FEA by hand and matlab, yeah, i think so. i really suck at the academia way of doing FEA, never try it. just learn the software. speaking of which, i gotta go study.
Quote:
Originally Posted by StevenAg03
yeah, i had the same logic and had them arranged that way, but for some reason i outsmarted myself and chaged the answer.
C- 1:1 but reverses direction
D- 2:1 with same direction
its a toss up as to which one you pick, with an edge on C being the direct if you dont sit and think about it too long.
Quote:
Originally Posted by robertf03
it puts the lotion on its skin or else it gets the hose again?
no, if there was no atmosphere it would stay a void because it would already be a vacuum, but if the atmospheric pressure was 0 and all of a sudden the volume of the cylinder got bigger (by the piston going down), the pressure inside the cylinder becomes negative, ie vacuum, and air from outside rushes in to fill the vacuum.Quote:
Originally Posted by DRAGOONRANCH
:laughing:
i went back and looked at the question. its misleading yes, but if you read all the answers, the correct one should be obvious.
here you go eric, from your favorite source of information:
"On the first stroke (intake/induction) of the piston, as the piston descends it reduces the pressure in the cylinder, a mixture of fuel and air is forced, by at least atmospheric pressure, into the cylinder through the intake (inlet) port."
I don't care what wikipedia says. The air is not forced in by atmospheric pressure. It is forced in by the vacuum that is the difference between the pressure inside the cylinder and the pressure outside the cylinder, which may be atmospheric pressure or it may be higher, it doesn't matter. The air would not be moving if the piston hadn't gone down, increasing the volume of the cylinder and creating a vacuum. PV/T=PV/T
Pv=nrt what?
i=prt!
Quote:
Originally Posted by BMFScout
i was gonna call him on that but if you rearrange the equation and take some stuff out, it right. its not a good argument though. im just saying that 3=3 and 2=2.
Quote:
Originally Posted by Snatch Adams
no, its V=IR
i could have sworn it was:
K = K*+IP+DRP+LP+MRP
U^ra=DuM@55
96% ya they are s***y questions
funnyishQuote:
Originally Posted by agjohn02
My question is, can there actually be a negative pressure? Once there is nothing in a space, you can't get any more out of it, correct? So if there is no negative pressures, only 0 or more, than even in a vacuum there is some pressure.
Quote:
Originally Posted by DRAGOONRANCH
pretty sure its a lost cause, ed. kinda like trying to tell democrats that abortion is murder, guns are not evil and islamofacists want to kill all of us
Negative ghost rider I give that a 6 out of 10 on the scale of funny. I chuckled.Quote:
Originally Posted by Snatch Adams
I am just trying to figure it out myself. I never did get into any of the physics classes other than what I learned in hikeskool and just general knowledge I have picked up over the years. I think it is an interesting subject.
You are right on the libs being so hard headed though. Like talking to a brick wall sometimes. It just makes you want to go club a baby seal.
http://static.flickr.com/118/251512004_492eef2a78_m.jpg
And just so nobody thinks I am a total a$$hole..
http://www.myfilestash.com/userfiles...by%20Seals.gif