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NSWEngineering StudiesQuick questions
HSC Module: Telecommunications Engineering
Quick questions on Telecommunications materials and components: HSC Engineering Studies Telecommunications Engineering
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is copper as a conductor?Show answer
Copper has been the dominant telecoms conductor since the 19th century and remains so for short-distance transmission.
What is aluminium as a copper substitute?Show answer
Aluminium has lower conductivity (around 3.5 x 10^7 S/m, roughly 60% of copper) but is lighter and cheaper. Used in overhead power and some telecoms applications where weight or cost matter more than conductivity.
What is silica glass for optical fibre?Show answer
Modern optical fibre uses ultra-pure synthetic silica (SiO2) with carefully controlled refractive index profile.
What are antennas?Show answer
An antenna is a transducer between a guided electrical signal and a free-space radio wave. The material properties that matter are conductivity (for the radiating element) and mechanical/environmental durability.
What is q1?Show answer
Compare copper and aluminium as electrical conductors for telecommunications, identifying two situations where each is preferred. [4 marks]
What is q2?Show answer
Explain why silica fibre attenuation is wavelength-dependent. [4 marks]
What is q3?Show answer
A telecommunications engineer is designing a 5G mmWave base station antenna. Identify three material or component choices and justify each. [6 marks]
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