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Tegnologie

Graad 9

Hidrouliese en pneumatiese stelsels

Module 13

Om ’n hidrouliese stelsel te bou

Fokustaak1:

Om ’n hidrouliese stelsel te bou

[lu 2.3 – 1.13]

  • Gebruik die werkstekening en bou ’n model van ’n hidrouliese stelsel wat aan ’n hefboom gekoppel is.

  • Jy benodig:
  • 1 x 10 mℓ-plastiekspuit
  • 1 x 20 mℓ-plastiekspuit
  • plastiekbuisie (lengte soos benodig)
  • lang spyker
  • geriffelde karton (onthou al die beginsels van versterking)
  • skêr, gom, maskeerband, kleeflint

PROJEK:

DIE TEGNOLOGIESE PROSES

[LU 1.1, 3.2]

  • Gebruik jou kennis van strukture en/of elektronika en/of meganismes en integreer dit met jou kennis en ondervinding van hidrouliese of pneumatiese stelsels om EEN van die volgende situasies op te los. Die probleem moet in terme van ’n TEGNOLOGIESE PROSES opgelos word en in ’n PORTEFEULJE voorgestel word.
  • Vir die PRAKTIESE WERK moet ’n prototipe, so goedkoop as moontlik, gebou word. Hierdie prototipe moet kan funksioneer.
  • Gebruik die assesseringsskale/matrikse om seker te maak of jy aan die vereistes van die proses voldoen.

Situasie I

Jou woonbuurt word geteister deur ’n brommerplaag. In verskeie koerantberigte is die mense van die omgewing gevra om die probleem hok te slaan deur die asblikke toe te hou. Dit is nie so maklik nie. Rondloperkatte wat gedurig die asblikke oopmaak, is een van die groot frustrasies. Die ander groot probleem is die verspreiding van kieme wat hand aan hand met die plaag gaan.

’n Inwoner het tot die slotsom gekom dat hy iets moet ontwerp wat hom in staat stel om die asblik oor ’n afstand oop te maak en wat hom waarsku wanneer die blik oop is.

Situasie II

In die kleedkamers vir gestremdes is die oopmaak van die deur altyd ’n groot probleem. Die gestremdes kan net ’n druk-aksie met hul hand, kierie of rolstoel se wiel uitvoer. Hierdie aksie moet hulle dan in staat stel om die deur oop te maak.

Situasie III

Die plak van posseëls kan baie tydrowend en vermoeiend wees wanneer dit op groot skaal gedoen word. ’n Toestel wat die posseël plak deur die druk van ’n knoppie en aandui dat dit suksesvol voltooi is, kan die probleem oplos.

Stappe van die Tegnologiese Proses wat gevolg moet word:

1. ONDERSOEK

1.1 ANALISE VAN ONTWERPVOORSTEL

  • Kern van die probleem
  • WAT sal ek doen?
  • WIE gaan dit gebruik?
  • WANNEER sal dit gebruik word?
  • WAAR sal dit gebruik word?
  • WAAROM sal dit gebruik word? [LU 1.1]

1.2 ONTWERPVOORSTEL

  • Ontwerp en maak……..wat, vir wie, waar, waarom en wanneer.

1.3 BEPERKINGS EN SPESIFIKASIES

  • Beperkings: Vereistes wat die keuse van die oplossing beperk.
  • Spesifikasies: Sluit beperkings in en word deur leerder self bepaal. Dit is ’n lys van faktore wat bepaal hoe die eindproduk gaan lyk en funksioneer.

2. ONTWIKKELING VAN IDEES

2.1 NAVORSING

  • Navorsing gaan oor die vaardigheid om data te versamel, data te noteer, data te analiseer en besluite volgens verwerkte data te neem.
  • Maak ’n lys van alle inligting wat jy benodig om jou idees te ontwikkel.
  • Hier is ’n paar voorstelle om jou te help.

STRUKTURE:

  • Materiale wat beskikbaar is.
  • Hoe kan die materiale versterk word?
  • Hoe word verskillende materiale gebruik?

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
yes
Asali
I'm not good at math so would you help me
Samantha
what is the problem that i will help you to self with?
Asali
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Tegnologie graad 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11070/1.1
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