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* D.C.G. HL predictions / discussion / aftermath * (1 thread only please)

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    #92
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    Honest question...what are the chances of gears coming up? I'll have to learn them because I've never done them before and the calculations look insane to have ready in one day.


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    #93
    hairybacon
    Closed Accounts Posts: 29 ✭hairybacon


    galwayman17.. wrote: »
    developments in surface geometry?
    Page 297 of the red book.


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    #94
    cookier
    Registered Users Posts: 33 ✭cookier


    Chemistry Ftw wrote: »
    Does anyone know a good website for Geologic and Surface Geometry sections beside examination.ie???

    It should be on the t4.ie website I think..


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    #95
    hairybacon
    Closed Accounts Posts: 29 ✭hairybacon


    Cydoniac wrote: »
    Honest question...what are the chances of gears coming up? I'll have to learn them because I've never done them before and the calculations look insane to have ready in one day.

    Well this is the first I heard of them- the book says you have to construct epicycloidal gear profiles. As far as I can see all the ones in the book are nearly the same, I'm just going to read over pages 194/5 and let her be lucky!


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    #96
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    hairybacon wrote: »
    Well this is the first I heard of them- the book says you have to construct epicycloidal gear profiles. As far as I can see all the ones in the book are nearly the same, I'm just going to read over pages 194/5 and let her be lucky!
    Hopefully it won't come up but I can't take any chances. I just wish I was aware of this before...

    Alternatively I could learn Geologic Geometry. Opinions?


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    #97
    Donerkebab
    Registered Users Posts: 118 ✭✭Donerkebab


    Griffen262 wrote: »
    Got a question, no doubt ye'll help me out.

    Having a look at laminas here and saw this Q in the samples in the exam papers.

    (c)Determine the angle of inclination of the line of intersection to the vertical(or in some questions the horizontal) plane.

    Vertical Plane Question

    Horizontal plane Question


    Notice question (d), find the dihedral angle...Now, I know how to set up these questions and find the line of intersection and also the dihedral angle, like this example..

    But these questions (c)'s are putting me off, Do you find the trace's of the planes? and thus the dihedral angle?...like this example?

    God, id love to have the teacher beside me for a few hours looking over things..


    P.S Galwayman17... <3
    Here ya go


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    #98
    galwayman17..
    Registered Users Posts: 102 ✭✭galwayman17..


    hairybacon wrote: »
    Page 297 of the red book.

    thats just practise tbh. you get into a rythym doing it.! this exam tomorrow im $hitting a brick for it!


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    #99
    galwayman17..
    Registered Users Posts: 102 ✭✭galwayman17..


    Cydoniac wrote: »
    Hopefully it won't come up but I can't take any chances. I just wish I was aware of this before...

    Alternatively I could learn Geologic Geometry. Opinions?

    geologic geometry isnt that hard but i dont really understand your situation, havnt read the comments,

    but ya the first part is simple with the roadworks and the 2nd part (boreholes) is a lil bit harder but not that much.


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    #100
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    galwayman17.. wrote: »
    geologic geometry isnt that hard but i dont really understand your situation, havnt read the comments,

    but ya the first part is simple with the roadworks and the 2nd part (boreholes) is a lil bit harder but not that much.
    Basically at the moment I can only do Dynamic Mechanisms and Assemblies, but I've never done the gears question. While it hasn't come up the past two years I'm kind of paranoid that it will come up and I'm unsure what to do.


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    #101
    dannyirishman
    Registered Users Posts: 47 ✭dannyirishman


    Can you use A2 paper?


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    #102
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    dannyirishman wrote: »
    Can you use A2 paper?
    A2 paper is given to you I think.


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    #103
    ride-the-spiral
    Registered Users Posts: 1,263 ✭✭✭ride-the-spiral


    wouldnt recommend learning geologic geometry in a day. It's not difficult, but being able to do it well requires practice, you're better off learning gears in the time we have.


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    #104
    jamesr1775
    Registered Users Posts: 46 ✭jamesr1775


    For section A my moneys on 1. perspective, 2.elipse/parabolas(if parabola probably the hyper one =]) 3. dimetric/trimetric and finally possibly a skew lines question
    for section B i think solids in contact is due, interpenetration, and for the third one im sort of torn between intersecting planes and oblique planes cause they both came up in 2009 and 2010 (hopefully intersecting planes, by far the easiest question on the paper)


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    #105
    MikeHough
    Registered Users Posts: 140 ✭✭MikeHough


    Cydoniac wrote: »
    A2 paper is given to you I think.

    does anyone know if the paper is lined in already or do we have to do all that......tedious like


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    #106
    ride-the-spiral
    Registered Users Posts: 1,263 ✭✭✭ride-the-spiral


    Jaysys, I haven't lined in paper since second year.


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    #107
    Joseph...
    Registered Users Posts: 60 ✭✭Joseph...


    God I remember last year doing it-twas a dream exam....theres a sort of a laid back, feel good factor bout the day cos you've the weekend and its the 1st real chill time you get to recharge...if your not finished that is!!


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    #108
    jamesr1775
    Registered Users Posts: 46 ✭jamesr1775


    Joseph... wrote: »
    God I remember last year doing it-twas a dream exam....theres a sort of a laid back, feel good factor bout the day cos you've the weekend and its the 1st real chill time you get to recharge...if your not finished that is!!
    my weekend will be spent trying to cram 2 years worth of physics and maybe some app maths.


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    #109
    galwayman17..
    Registered Users Posts: 102 ✭✭galwayman17..


    Cydoniac wrote: »
    Basically at the moment I can only do Dynamic Mechanisms and Assemblies, but I've never done the gears question. While it hasn't come up the past two years I'm kind of paranoid that it will come up and I'm unsure what to do.

    ya i agree with ride the spiral, it is simple but not possible to master it in a day! the only sanity i have left from thinking about this exam is that surface and geologic geometry will defo e on the paper!

    i cannot wait until this exam is over!


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    #110
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    Feeling very anxious about this exam. It could either be beautiful or absolutely horrible. I'm just praying that gears question won't come up.


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    #111
    citizen_p
    Closed Accounts Posts: 2,494 ✭✭✭citizen_p


    It should be easy to pass if you did a goood project.

    Im fairly ****ed for the exam, we only had 3 1/2 months of actual drawing classes in 2 years.
    5th year no teacher, 6th project until febuary.


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    #112
    Kedo93
    Registered Users Posts: 35 ✭Kedo93


    Cydoniac wrote: »
    Feeling very anxious about this exam. It could either be beautiful or absolutely horrible. I'm just praying that gears question won't come up.
    Right on with ya! I just can't get my head around those gears. our teacher thought us a really different way from our book. Everytime I look at the book method I'm completely baffled. The worst bit is learning all those formulae...god I hate them gears!


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    #113
    galwayman17..
    Registered Users Posts: 102 ✭✭galwayman17..


    im more nervous for this than i was for biology. i hope to god i can answer the section b questions!


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    #114
    Shanee.
    Registered Users Posts: 1,203 ✭✭✭Shanee.


    Hope what i learned comes up, i'm like everyone else havent a notion of gears!


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    #115
    Doyle 2
    Closed Accounts Posts: 3 ✭Doyle 2


    Do ya need your own drawing board


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    #116
    citizen_p
    Closed Accounts Posts: 2,494 ✭✭✭citizen_p


    bring your own t square if you have it, tables should be adequate for drawin, i know im getting one of the tables from the tech graph room


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    #117
    mullarkey b
    Closed Accounts Posts: 3 ✭mullarkey b


    Mousey- wrote: »
    bring your own t square if you have it, tables should be adequate for drawin, i know im getting one of the tables from the tech graph room
    your own t-square!? my god thats awkward


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    #118
    Griffen262
    Registered Users Posts: 286 ✭✭Griffen262


    Cant wait, this is gonna be some craic!


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    #119
    Ronan Keating
    Closed Accounts Posts: 913 ✭✭✭Ronan Keating


    That was a nice, handy enough exam.


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    #120
    MikeHough
    Registered Users Posts: 140 ✭✭MikeHough


    Ronan Keating wrote: »
    That was a nice, handy enough exam.

    Twas indeed boy.
    Very happy with it.
    Which Qs did ye all do???
    Sneaky enough of them to leave of oblique plane and skew planes i thought


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    #121
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    That test was so amazing! I actually feel like I'm well on the way to an A1!

    I did all 4 of the Section A questions.
    Section B - Did the axonometric and lipstick cut section. Lipstick one was fantastic.
    Section C - Dynamic Mechanisms and Assemblies. The cam was unbelievably easy, I couldn't believe they weren't asking for UAR or having to work backwards. Bird Feeder was brilliant to do, I definitely assembled it right, hopefully got all hatching, and my angle was 145, did anyone else get anything in the region of that?


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