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Question

Which of these materials is the most cathodic?
A) Zinc
B) Stainless steel
C) 2024 aluminum alloy
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Select the solvent used to clean acrylics and rubber.
A) Methyl ethyl ketone
B) Aromatic naphtha
C) Aliphatic naphtha
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ASA Study Unit 9

Aircraft Cleaning, Records

QuestionAnswer
Which of these materials is the most cathodic? A) Zinc B) Stainless steel C) 2024 aluminum alloy stainless steel
Select the solvent used to clean acrylics and rubber. A) Methyl ethyl ketone B) Aromatic naphtha C) Aliphatic naphtha aliphatic naphtha
A TSO is issued by who? A) The aircraft industry B) The administrator C) Part manufacturers the administrator
A non-electrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint bonding qualities is called A) alodizing B) dichromating C) anodizing alodizing
When an anodized surface coat is damaged, it can be partially restored by A) chemical surface treatment B) applying a thin coat of zinc chromate primer C) use of a suitable mild cleaner chemical surface treatment
What may be used to remove corrosion from highly stressed steel surfaces? A) fine grit aluminum oxide B) steel wire brushes C) medium grit carborundum paper fine grit aluminum oxide
In order to reconstruct lost/destroyed records, what's needed? A) TT of airframe B) Dates of all maintenance/alterations C) Dates/times of all inspections TT of airfame
Fretting is most likely to occur when A) 2 surfaces fit loosely together but move B) 2 surfaces fit tightly together but still move C) only when 2 dissimilar metals touch 2 surfaces fit tightly together but still move
Select the solvent used for wipedown of cleaned surfaces before painting. A) dry-cleaning solvent B) aromatic naphtha C) aliphatic naphtha aliphatic naphtha
Galvanic corrosion is severe when: A) the surfaces are the same size B) the anodic material is smaller C) the cathodic material is smaller the anodic material is smaller
One way of obtaining stress corrosion cracking resistance is A) creating compressive stresses on the surface B) producing stress during cold-working C) relieving compressive stresses on the surface creating compressive stresses on the surface
1. In the corrosion process, only the cathodic area corrodes 2. In the Galvanic or Electro-Chemical Series for metals, anodic metals give up their electrons easily Which, if any, are true? only #2
A primary purpose of intergranular corrosion is A) improper application of primer B) dissimilar metal contact C) improper heat treatment improper heat treatment
What records must be retained for at least one year or until the work is repeated/superseded? A) records of inspection status, including time since last one B) records of maintenance and inspections C) records of time since overhaul of items records of maintenance and inspections
Which of these metals is the most anodic? A) Magnesium B) 7075-T6 aluminum alloy C) cadmium magnesium
Created by: bpyles1
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