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Cathodic protection: Quiz

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Question 1: These include high silicon ________, graphite, mixed metal oxide, platinum and niobium coated wire and others.
Alloy steelWrought ironSteelCast iron

Question 2: Cathodic protection (CP) is a technique to control the corrosion of a metal surface by making it work as a ________ of an electrochemical cell.
CathodeGalvanic cellBattery (electricity)Anode

Question 3: spill from a ________ crude oil line contains an excellent definition of the cathodic shielding problem:
ManitobaBritish ColumbiaAlbertaSaskatchewan

Question 4: Since excess marine growth affected the performance of the ship, the ________ decided that it was better to allow the copper to corrode and have the benefit of reduced marine growth, so CP was not used further.
HMS Ocean (L12)HMS Ark Royal (R07)Royal NavyHMS Illustrious (R06)

Question 5: The positive DC output terminal is connected via ________ to the array of anodes buried in the ground (the anode groundbed).
Power cableCable (disambiguation)Coaxial cableCable

Question 6: Cathodic protection was first described by Sir ________ in a series of papers presented to the Royal Society[1] in London in 1824.
William Thomson, 1st Baron KelvinHumphry DavyChlorineGeorge Biddell Airy

Question 7: Copper-copper(II) sulfate electrodes are used for structures in contact with ________ or fresh water.
Water wellLandslideSoilClay

Question 8: Cathodic protection systems are most commonly used to protect steel, water or fuel pipelines and storage tanks, steel pier piles, ships, offshore ________ and onshore oil well casings.
Oil platformSkyscraperConstructionAdditionally guyed tower

Question 9: Sacrificial anodes made from iron were attached to the ________ sheath of the hull below the waterline and dramatically reduced the corrosion rate of the copper.
CopperPalladiumSilverGold







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