Metals
Corrosion
bolts
Bonus
100

Which of the following describe the effects of annealing steel and aluminum alloys?

  • decrease in internal stress
  • softening of the metal
  • improved corrosion resistance
100
  • Of the following, when and/or where is galvanic corrosion most likely to occur?

 At the interface of a steel fastener and aluminum alloy inspection plate in the presence of an electrolyte

100
  • Aircraft bolts are usually manufactured with a:
  • class 3 fit for the threads
100

What do you call an illegally parked frog?

Toad

200

One characteristic of a good weld is that no oxide should be formed on the base metal at a distance from the weld of more than

1/2 inch

200
  • What may be used to remove corrosion from highly stressed steel surfaces?
  • Fine grit aluminum oxide
200

When the specific torque value for nuts is not given, where can the recommended torque value be found?

  A. The maintenance manual only

   B. The AC43.13-1B only

   C. Both publications listed above

200

: How can a leopard change his spots?

By Moving 

300
  • Which of the following materials may be inspected using the magnetic particle inspection method?

 

  • Magnesium alloys
  • Aluminum alloys
  • Iron alloys
  • Copper alloys
  • Zinc alloys
300

Magnetic particle inspection is used primarily to detect?

  • flaws on or near the surface
300
  • Self-locking nuts may be used on aircraft provided that:
  • the bolt or nut is not subject to rotation
300

  Why do seagulls fly over the sea? 

 If they flew over the bay, they’d be called bagels

400
  • Which heat treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
  • Case hardening
400
  • Liquid penetrant inspection methods may be used on which of the following?
  • 1.  porous plastics

    2.  ferrous metals

    3.  nonferrous metals

    4.  smooth primer-sealed wood

    5.  nonporous plastics

2,3,5

400

What does AN stand for?


Air Force/ Army Navy

400

: What did one ocean say to the other ocean?

Nothing, they just waved.

500

Which metal is moth Cathodic? Gold or Zinc? 

Gold. 

500
  • If dye penetrant inspection indications are not sharp and clear, the most probable cause is that the part:
  • was not thoroughly washed before the developer was applied
500

 

  • A bolt with a single raised dash on the head is classified as an:
  • AN corrosion resistant steel bolt
500

Who invented the first airplane that wouldn’t fly?

The wrong brothers

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