What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
A-Residual.
B-Inductance.
C-Continuous.
C-Continuous
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has
A-high permeability and low retentivity.
B-low permeability and high retentivity.
C-high permeability and high retentivity.
> A-high permeability and low retentivity.
Which statement relating to the residual magnetizing inspection method is true?
A-Subsurface discontinuities are made readily
apparent.
B—It is used in practically all circular and longitudinal
magnetizing procedures.
C-It may be used with steels which have been heat
treated for stressed applications.
> C-It may be used with steels which have been heat
treated for stressed applications.
What two types of indicating mediums are available for magnetic particle inspection?
A-Iron and ferric oxides.
B-Wet and dry process materials.
C-High retentivity and low permeability material.
<B-Wet and dry process materials.
Which of the following materials may be inspected using the magnetic particle inspection method?
A-Copper alloys.
B-Aluminum alloys.
C-Iron alloys.
<C-Iron alloys.
Which of the following methods may be suitable to use to detect cracks open to the surface in aluminum forgings and castings?
A-Dye penetrant inspection and eddy current
inspection.
B-Dye penetrant inspection and magnetic particle
inspection.
C-Magnetic particle inspection and metallic ring
inspection.
<A-Dye penetrant inspection and eddy current
inspection.
To detect a minute crack using dye penetrate
inspection usually requires
A-that the developer be applied to a flat surface.
This causes the maxi and forms magnetic
B-a longer-than-normal penetrating time.
medium across the de
C-the surface to be highly polished.
<B-a longer-than-normal penetrating time.
medium across the de
In magnetic particle inspection, a flaw that is per-bendicular to the magnetic field flux lines generally causes
A-a large disruption in the magnetic field
B—a minimal disruption in the magnetic field.
C-no disruption in the magnetic field.
<A-a large disruption in the magnetic field
What type of corrosion may attack the grain boundaries of aluminum alloys when the heat treatment process has been improperly accomplished?
A-Concentration cell.
B-Intergranular.
C-Fretting.
<B-Intergranular.
Which heat-treating process of metal produces a hard, wear-resistant surface over a strong, tough core?
A-Case hardening.
B-Annealing.
C-Tempering.
<A-Case hardening.
Normalizing is a process of heat treating
A-aluminum alloys only.
B-iron-base metals only.
C-both aluminum alloys and iron-base metals.
<B-iron-base metals only.
The reheating of a heat treated metal, such as with a welding torch
A-has little or no effect on a metal’s heat treated
characteristics.
B-has a cumulative enhancement effect on the
original heat treatment.
C-can significantly alter a metal’s properties in the
reheated area.
<C-can significantly alter a metal’s properties in the
reheated area.
What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment?
A-3003-F.
B—5052-H36.
C-6061-0.
A-3003-F.
What is descriptive of the annealing process of steel during and after it has been annealed?
A-Rapid cooling; high strength.
B-Slow cooling; low strength.
C-Slow cooling; increased resistance to wear.
<B-Slow cooling; low strength.
In the four-digit aluminum index system number 2024, the first digit indicates
The major alloying element.
B-the number of major alloying elements used in the metal.
C-the percent of alloying metal added.
a. >The major alloying element
Which is an acceptable safety device for a castle nut when installed on secondary structures?
A-Star washer.
B-Lockwasher.
C-Cotter pin.
C-Cotter pin.
(refer to figure 44) identify the weld caused by an excueesive amount of acetylene
a. 4
b. 1
c. 3
c. 3
(refer to) select the illustration which depicts a col weld.
a. 3
b. 2
c. 4
b. 2
