Flashcards
Electronics
Flashcards do conjunto (21)
- 1Give properties of plasticsInsulators, weather chemical and corrosion resistant, heat resistant, available in many colours, easily shaped and formed, able to be injection moulded.
- 2Give properties of HIPSLight, flexible, strong, can be cut, drilled injection moulded, vacuum formed, used for toys, boxed containers and cases for electrical goods.
- 3Give properties of ABS (Acrylonitrile Butadiene Styrene)Resistant to impact, can be cut, drilled injection moulded, vacuum formed, and is used for car components, tool handles & cases for telephones and kitchen appliances.
- 4Give properties of acrylicHard-wearing and will not shatter (does scratch) can be machined, drilled and threaded and is used for signs, aircraft windows, washbasins and covers for car lights.
- 5Give properties of PVC (Polyvinyl Chloride)It is lightweight, hard-wearing and used for pipes, guttering, bottles and window frames.
- 6Give properties of nylonResistant to wear, self-lubricating and can be machined and used for bearings and gear wheels.
- 7Give properties of GRP (Glass reinforced plastic)Thermosetting, mix of polyester and glass fibre, used for canoes, boats and car bodies.
- 8Give properties of epoxy resinThermosetting, resin and hardener mized together and used for castings, PCB and surface coatings and the boding of other materials.
- 9Give properties of pineSingle whole pieces of pine which is cut machines planed or nailed whole- joined with screws and PVA glue.
- 10Give properties of MDF (Medium density fibeboard)Made of wood fibres mixed with adhesive and is available in a variety of thicknesses- also very cheap and useful for moulds in vacuum forming.
- 11Give properties of plywoodConstructed from odd numbers of thin layers of wood glued together. The greater the number of layers, the stronger the plywood. The layers are arranged so that their grain directions are turned through 90 degrees.
- 12Give properties of metalsElasticity, ductility, malleability, harness, brittleness, tensile strength and toughness.
- 13Give properties of aluminiumSoft and ductile, a good conductor, good strength to weight ratio. Used for cooking foil, window frames, toys and kitchen equipment.
- 14Give properties of duraluminAn alloy of aluminium with 4% copper and 1% manganese, giving greater strength than aluminium. Used extensively in the aircraft industry.
- 15Give properties of copperMalleable and ductile, good conductor, excellent resistance to corrosion, used for plumbing and electrical components.
- 16Give properties of brassAn alloy of copper with 35% zinc. Good resistance to corrosion, fairly hard, good conductor, used for plumbing, boat fittings and ornaments.
- 17Give properties of mild steelFerrous metal- tough, ductile, malleable, good tensile strength, poor resistance to corrosion and is used for general purpose engineering parts. Can be joined by soldering brazing welding and mechanical fixings. It can be machined by turning, milling drilling and grinding. It can also be forged, bent and press formed.
- 18Give properties of piezo transducers and piezoelectric cablesPiezoelectric materials produce small voltages when deformed or struck by mechanical movement. It also deforms when voltage is applied. It can be put into cable to convert mechanical energy into electrical energy.
- 19Give properties of solar cells (photovoltaic cells)They convert solar energy into electricity, and can be linked together to make solar modules which can be linked to make larger solar arrays.
- 20Optical fibreGlass or plastic fibre that carries light signals along its length and is used widely in communications, medical applications and hazardous areas. Used in place of conductive electrical wire because the signal's better with no interference and it isn't as heavy as metal wire.
- 21What are ferrous and non-ferrous metals?Ferrous metals contain iron and are attracted to magnets.
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- FlashCards sobre Electronics, criado por Ben Levett em 18-05-2015.
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- Ben Levett
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