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Thread: Mechanical Aptitude Test

  1. #1
    Senior Member AshSimmonds's Avatar
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    I'm only part way through, but it's pretty cool.

    ---> http://www.forddoctorsdts.com/quizze...alAptitude.php

    I'm fairly good with this stuff, but I'm not 100% sure when it comes to applied forces so I'm not expecting much more than 70% results.

    Edit: now it's up to electrical circuits... I drop my result expectation to 50%

  2. #2
    Senior Member AshSimmonds's Avatar
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    74% :?

  3. #3
    The Best in the World. Aircon's Avatar
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    Quote Originally Posted by ashsimmonds View Post
    74% :?
    82%...phew...passed by 2!

  4. #4
    The Best in the World. Aircon's Avatar
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    i was a bit surprised by the answer to q48


  5. #5
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    83%

    not happy about some questions!

    eg...

    which fuel is "easier" to ignite.... well, their answer needs a separate source for a spark, mine needed only compression... i was wrong.. but what exactly is "easy" supposed to mean?


  6. #6
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    Quote Originally Posted by Aircon View Post
    i was a bit surprised by the answer to q48

    ^ yes, me too. Even in a zero atmo environment, air would be SUCKED in.... and it depends on piston speed and valve area

  7. #7
    Senior Member AshSimmonds's Avatar
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    Quote Originally Posted by ferrarifixer View Post
    ^ yes, me too. Even in a zero atmo environment, air would be SUCKED in.
    +2

    As for the ignition question, I was hovering over both diesel and petroleum thinking they could mean what you were talking about.

  8. #8
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    and wow.. I'm only 1% smarter than peepee on this...

    Maybe I should take up aircon fixing.

    It's the poxy pulley questions, they ALWAYS get me.... any allowance for spindle friction?

  9. #9
    The Best in the World. Aircon's Avatar
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    Quote Originally Posted by ferrarifixer View Post
    Maybe I should take up aircon fixing.
    you may as well....i don't have a clue about it.

  10. #10
    86%. Maybe I should've been a mechanic instead of a geek.
    Also, pulleys can fuck directly off

  11. #11
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    Quote Originally Posted by VMax View Post

    Also, pulleys can fuck directly off
    hehe... only pirates and wharfies get them...

  12. #12
    Senior Member leburpor's Avatar
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    76%... :?

  13. #13
    Rubber King of Adelaide S4Simon's Avatar
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    80% Passed with flying colours - What do I win.

    Maybe I should stick with my profession of military Fibre Optic Guidance Systems - seems so much more simple. :scratchchin:

  14. #14
    The Best in the World. Aircon's Avatar
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    we all know phil's dumb....and phil's a mechanic....so sadly for me i have to admit that, clearly, the higher the score, the dumber you are.

  15. #15
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    Quote Originally Posted by Aircon View Post
    we all know phil's dumb....and phil's a mechanic....so sadly for me i have to admit that, clearly, the higher the score, the dumber you are.
    but I am the happiest guy I know...

    ok, just watched ash's relay vid.. maybe TB is just as happy!

  16. #16
    Quote Originally Posted by ferrarifixer View Post
    ^ yes, me too. Even in a zero atmo environment, air would be SUCKED in.... and it depends on piston speed and valve area
    No it wouldn't, a for-reals 100% 0.000000000 recurring PSI environment is, by definition, a vacuum, and there is no air to suck in. If you have air, you have pressure.

    Edit - the REAL answer is gravity :P

  17. #17
    The Best in the World. Aircon's Avatar
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    Quote Originally Posted by VMax View Post
    No it wouldn't, a for-reals 100% 0.000000000 recurring PSI environment is, by definition, a vacuum, and there is no air to suck in. If you have air, you have pressure.

    Edit - the REAL answer is gravity :P
    nerd

    it was a mechanical aptitude test....not rocket science.

  18. #18
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    Quote Originally Posted by VMax View Post
    No it wouldn't, a for-reals 100% 0.000000000 recurring PSI environment is, by definition, a vacuum, and there is no air to suck in. If you have air, you have pressure.

    Edit - the REAL answer is gravity :P
    nerd

    You'd probably say an F40 has 1.7 bar of boost (1.9 overtake)... instead of 0.7bar (0.9 overtake)

  19. #19
    Quote Originally Posted by ferrarifixer View Post
    nerd

    You'd probably say an F40 has 1.7 bar of boost (1.9 overtake)... instead of 0.7bar (0.9 overtake)
    Well, if the absolute pressure is 1.7, then I'd say 0.7 boost. Cause, you know... "boost". Like, how much above ambient. If it was a specific "pressure" thing with no mention of the word boost, then yes, 1.7. English is great that way.

    Anyway... the fact remains... if you want to call a vacuum 0psi/bar/atm then the question is unanswerable, no air. If you want to call 14.7-odd psi "0 atmo" (for some reason I don't quite grasp), then that 14.7psi is what's making it happen. In neither case is the piston causing air to enter the cylinder, and under no circumstances I can conceive does it do so, it simply allows it to happen.

  20. #20
    Senior Member AshSimmonds's Avatar
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    Quote Originally Posted by VMax View Post
    In neither case is the piston causing air to enter the cylinder, and under no circumstances I can conceive does it do so, it simply allows it to happen.
    It's not gravity though, turn the piston upside down and it will still "suck" air in when it creates a low pressure zone in the cylinder... in fact that's what "sucking" is! (you should know... )

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