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ENGINEERING, TE 2024 HSC 23d

A public telephone booth is assembled using a variety of parts.
 

Complete the table.   (4 marks)

--- 0 WORK AREA LINES (style=lined) ---

\begin{array} {|l|l|l|}
\hline
\rule{0pt}{2.5ex} \textit{Part} & \textit{Material} & \textit{Justification of } & \textit{Manufacturing } \\
\textit{} \rule[-1ex]{0pt}{0pt} & \textit{} & \textit{material}  & \textit{method} \\
\hline
\\ \\ 
\text{}\text{} & &\text{Needs to be} & \\
\text{Screen} & \text{..................................} & \text{impact resistant} & \text{..................................}\\
\\ \\ 
\hline
\\ \\ 
\text{} &\text{} & \text{..................................} & \text{} \\
\text{Hand Receiver} \quad & \text{ABS} & \text{..................................} & \text{..................................}\\
\text{} & \text{} & \text{..................................} & \\
\\ \\ 
\hline
\\ \\ 
\text{} &\text{} & \text{..................................} & \text{Cold rolled and} \\
\text{Shelf} & \text{..................................} & \text{..................................} & \text{pressed}\\
\text{} & \text{} & \text{..................................} & \\
\\ \\ 
\hline
\end{array}

Show Answers Only

\begin{array} {|l|l|l|}
\hline
\rule{0pt}{2.5ex} \textit{Part} & \textit{Material} & \textit{Justification of } & \textit{Manufacturing } \\
\textit{} \rule[-1ex]{0pt}{0pt} & \textit{} & \textit{material}  & \textit{method} \\
\hline
\text{Screen} & \text{Acrylic} & \text{Needs to be impact} & \text{Cast}\\
\text{}\text{} & &\text{resistant} & \\
\hline
\text{Hand Receiver} \quad & \text{ABS} & \text{Complex shaped,} & \text{Injection moulded}\\
\text{} & \text{} & \text{easily moulded} & \\
\hline
\text{} &\text{} & \text{Corrosion} &  \\
\text{Shelf} & \text{Stainless steel} & \text{resistance,} & \text{Cold rolled and }\\
\text{} & \text{} & \text{hardness,} & \text{pressed}\\
\text{} & \text{} & \text{cleanability} & \\
\hline
\end{array}

Show Worked Solution

\begin{array} {|l|l|l|}
\hline
\rule{0pt}{2.5ex} \textit{Part} & \textit{Material} & \textit{Justification of } & \textit{Manufacturing } \\
\textit{} \rule[-1ex]{0pt}{0pt} & \textit{} & \textit{material}  & \textit{method} \\
\hline
\text{Screen} & \text{Acrylic} & \text{Needs to be impact} & \text{Cast}\\
\text{}\text{} & &\text{resistant} & \\
\hline
\text{Hand Receiver} \quad & \text{ABS} & \text{Complex shaped,} & \text{Injection moulded}\\
\text{} & \text{} & \text{easily moulded} & \\
\hline
\text{} &\text{} & \text{Corrosion} &  \\
\text{Shelf} & \text{Stainless steel} & \text{resistance,} & \text{Cold rolled and }\\
\text{} & \text{} & \text{hardness,} & \text{pressed}\\
\text{} & \text{} & \text{cleanability} & \\
\hline
\end{array}

Filed Under: Materials Tagged With: Band 4, smc-3729-50-Device casings

ENGINEERING, TE 2022 HSC 27a

Describe TWO different uses of polymers in telecommunications.   (4 marks)

--- 10 WORK AREA LINES (style=lined) ---

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Answers could include any two of the following:

Cable protection and insulation

  • Polymers offer protection for both the cable and anyone who may come in contact with it.

Circuit components

  • Polymers are widely used internally in many telecommunication devices.

Device casings and housings

  • Polymers are a common material used for casings for devices such as TV’s and mobile phones.
Show Worked Solution

Answers could include any two of the following:

Cable protection and insulation

  • Polymers offer protection for both the cable and anyone who may come in contact with it.

Circuit components

  • Polymers are widely used internally in many telecommunication devices.

Device casings and housings

  • Polymers are a common material used for casings for devices such as TV’s and mobile phones.

Filed Under: Materials Tagged With: Band 4, smc-3729-15-Insulation/Polymers, smc-3729-50-Device casings

ENGINEERING, TE 2022 HSC 22c

An engineer is selecting a suitable material for the exterior housing of a telecommunications device such as the smart watch. Justify material properties that should be considered.   (3 marks)

--- 7 WORK AREA LINES (style=lined) ---

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Properties to be considered:

  • Hardness: To resist abrasions/scratches encountered in daily life
  • Toughness: To resist damage from sudden impacts such as falling over
  • Water resistance: Protect internal electronics from exposure to water
  • Hypoallergenic: Avoid damage to user’s skin
  • Corrosion resistance and chemical stability: Increase lifespan of smartwatch and prevent injury to user
Show Worked Solution

Properties to be considered:

  • Hardness: To resist abrasions/scratches encountered in daily life
  • Toughness: To resist damage from sudden impacts such as falling over
  • Water resistance: Protect internal electronics from exposure to water
  • Hypoallergenic: Avoid damage to user’s skin
  • Corrosion resistance and chemical stability: Increase lifespan of smartwatch and prevent injury to user

Filed Under: Materials Tagged With: Band 4, smc-3729-10-Testing, smc-3729-15-Insulation/Polymers, smc-3729-50-Device casings

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