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FIGUUR 9.1 hieronder toon 'n rotanddrywingstelsel - NSC Mechanical Technology Fitting and Machining - Question 9 - 2018 - Paper 1

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FIGUUR 9.1 hieronder toon 'n rotanddrywingstelsel. Dryfat A op die as van die elektriese motor het 40 tande wat met rat B met 60 tande op 'n tussenas inkam. Op die t... show full transcript

Worked Solution & Example Answer:FIGUUR 9.1 hieronder toon 'n rotanddrywingstelsel - NSC Mechanical Technology Fitting and Machining - Question 9 - 2018 - Paper 1

Step 1

Rotasiefrekwensie van die finale gedrewe as indien die elektriese motor teen 1 440 r/min roteer

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Answer

Om die rotasiefrekwensie van die finale gedrewe as te bereken, gebruik ons die formule:

ND=NA×TATB×TCTDN_D = N_A \times \frac{T_A}{T_B} \times \frac{T_C}{T_D}

Hierdie variabeles is soos volg:

  • NA=1,440N_A = 1,440 r/min
  • TA=40T_A = 40 tande (Dryfat A)
  • TB=60T_B = 60 tande (Rat B)
  • TC=30T_C = 30 tande (Dryfat C)
  • TD=80T_D = 80 tande (Rat D)

Die berekening sal wees:

ND=1,440×4060×3080N_D = 1,440 \times \frac{40}{60} \times \frac{30}{80}
ND=360 r/minN_D = 360 \text{ r/min}

Step 2

Snelheidsverhouding tussen die inset- en uitsetas

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Answer

Die snelheidsverhouding (VR) kan bereken word met die formule:

VR=NinsetNuitsetVR = \frac{N_{inset}}{N_{uitset}}

Waarby:

  • Ninset=1,440N_{inset} = 1,440 r/min
  • Nuitset=360N_{uitset} = 360 r/min

Die berekening sal wees:

VR=1,440360=4:1VR = \frac{1,440}{360} = 4:1

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