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Natural science > Materials & Processes (3) > Flashcards

Materials & Processes (3) Flashcards

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1
Q

Where is an AN clevis bolt used in an airplane

a. For tension and shear load conditions
b. Where external tension loads are applied
c. Only for shear load applications

A

c. Only for shear load applications

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2
Q

In magnetic particle inspection, a flaw that is perpendicular 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. A large disruption in the magnetic field

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3
Q

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

A

b. Intergranular

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3
Q

The twist of a connecting rod is checked by installing push-fit arbors in both ends, supported by parallel steel bars on a surface plate. Measurements are taken between the **arbor and the parallel bar **with a

a. Dial gauge
b. Height gauge
c. Thickness gauge

A

c. Thickness gauge

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3
Q

Select a characteristics of a good gas weld

a. The depth of penetration shall be sufficient to ensure fusion off the filler rod
b. The height of the weld bead should be 1/8 inch above the base metal
c. The weld should taper off smoothly into
the base metal

A

c. The weld should taper off smoothly into the base metal

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4
Q

The core material of Alclad 2024-T4 is

a. Heat-treated aluminum alloy, and the surface material is commercially pure aluminum
b. Commercially pure aluminum, and the
surface material is heat-treated aluminum alloy
c. Strain- hardened aluminum alloy, and the
surface material is commercially pure
aluminum

A

a. Heat-treated aluminum alloy, and the surface material is commercially pure aluminum

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4
Q

Which tool is used to measure the clearance between a surface plate and a relatively narrow surface being checked for flatness?

a. Depth gauge
b. Thickness gauge
c. Dial indicator

A

b. Thickness gauge

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4
Q

What tool is generally used to calibrate a micrometer or check its accuracy?

a. Gauge block
b. Dial indicator
c. Machinist scale

A

a. Gauge block

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5
Q

How is a clevis bolt used with a fork-end cable terminal secured?

a. With a shear nut tightened to a snug fit, but with no strain imposed on the fork and safe tied with a cotter pin

b. With a castle nut tightened until slight
binding occurs between the fork and the fitting to which it is being attached

c. With a shear nut and cotter pin or thin self locking nut tightened enough to prevent rotation of the bolt in the fork

A

a. With a shear nut tightened to a snug fit, but with no strain imposed on the fork and safe tied with a cotter pin

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6
Q

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

a. High permeability and low retentivity

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7
Q

To detect a minute crack using dye penetrant inspection usually requires

a. That the developer be applied to a flat
surface
b. A longer-than-normal penetrating time
c. The surface to be highly polished

A

b. A longer-than-normal penetrating time

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8
Q

A mechanic has completed a bonded honeycomb repair using the potted compound repair technique. What nondestructive testing method is used to determine the soundness of the repair after the repair has cured?

a. Eddy current test
b. Metallic ring test
c. Ultrasonic test

A

b. Metallic ring test

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9
Q

What may be used to check the stem on a poppet-type valve for stretch?

a. Dial indicator
b. Micrometer
c. Telescoping gauge

A

b. Micrometer

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10
Q

What defects will be detected by magnetizing a part using continuous longitudinal magnetization with a cable?

a. Defects perpendicular to the axis of the part
b. Defects parallel to the long axis of the part
c. Defects parallel to the concentric circles of magnetic force within the part

A

a. Defects perpendicular to the axis of the
part

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11
Q

Which of the following methods may be suitable to
use to detect cracks open to the surface in aluminum
forgings and castings?

  1. Dye penetrant inspection
  2. Magnetic particle inspection
  3. Metallic ring (coin tap) inspection
  4. Eddy current inspection
  5. Ultrasonic inspection
  6. Visual inspection

a. 1,4,5,6
b. 1,2,4,5,6
c. 1,2,3,4,5,6

A

a. 1,4,5,6

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12
Q

How can the dimensional inspection of a bearing in a
rocker arm be accomplished?

a. Depth gauge and micrometer
b. Thickness gauge and push-fit arbor
c. Telescopic gauge and micrometer

A

c. Telescopic gauge and micrometer

13
Q

Which tool can be used to measure the alignment of a rotor shaft or the plane of rotation of a disk?

a. Dial indicator
b. Shaft gauge
c. Protractor

A

a. Dial indicator

14
Q

Holes and a few projecting globules are found in a weld. What action should be taken?

a. Reweld the defective portions
b. Remove all the old weld, and Reweld the joint
c. Grind the rough surface smooth, inspect, and
Reweld all gaps/holes

A

b. Remove all the old weld, and Reweld the joint

15
Q

A particular component is attached to the aircraft structure by the use of an aircraft bolt and a castle tension nut combination. If the cotter pin hole does not align within the recommended torque range, the acceptable practice is to

a. Exceed the recommended torque range by no
more than 10 percent

b. Tighten below the torque range

c. Change washers and try again

A

c. Change washers and try again

16
Q

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

a. 2,3,4
b. 1,2,3
c. 2,3,5

A

c. 2,3,5

17
Q

Why should an aircraft maintenance technician be familiar with weld nomenclature?

a. So that accurate visual (pictorial)
comparisons can be made

b. In order to gain familiarity with the
welding technique, filler material and
temperature range used

c. In order to compare welds with written
(non-pictorial) description standards

A

b. In order to gain familiarity with the
welding technique, filler material and
temperature range used

18
Q

Aircraft bolts with a cross or asterisk marked on the
bolthead are

a. Made of aluminum alloy
b. Close tolerance bolts
c. Standard steel bolts

A

c. Standard steel bolts

19
Q

Select a characteristics of a good gas weld

a. The depth of penetration shall be sufficient to ensure fusion of the filler rod
b. The height of the weld bead should be 1/8 inch above the base metal
c. The weld should taper off smoothly into
the base metal

A

c. The weld should taper off smoothly into the base metal

20
Q

One way a part may be demagnetized after magnetic particle inspection is by

a. Subjecting the part to high voltage, low
amperage ac
b. Slowly moving the part out of an ac
magnetic field of sufficient strength
c. Slowly moving the part into an ac magnetic
field of sufficient strength

A

b. Slowly moving the part out of an ac
magnetic field of sufficient strength

21
Q

Which tool is used to find the center of a shaft or other cylindrical work

a. Combination set
b. Dial indicator
c. Micrometer caliper

A

a. Combination set

22
Q

Normalizing is a process of heat treating

a. Aluminum alloys only
b. Iron-base metal only
c. Both aluminum alloys and iron-base metals

A

b. Iron-base metal only

23
Q

Under magnetic particle inspection, a part will be identified as having a fatigue crack under which condition?

a. The discontinuity pattern is straight
b. The discontinuity is found in a nonstressed
area of the part
c. The discontinuity is found in a highly
stressed area of the part

A

c. The discontinuity is found in a highly
stressed area of the part

24
Q

Which of these nondestructive testing methods is
suitable for the inspection of most metals, plastics
and ceramics for surface and subsurface defects?

a. Eddy current inspection
b. Magnetic particle inspection
c. Ultrasonic inspection

A

c. Ultrasonic inspection

25
Q

What metal has special short-time heat properties and is used in the construction of aircraft firewalls?

a. Stainless steel
b. Chrome molybdenum alloy steel
c. Titanium alloy

A

c. Titanium alloy

26
Q

The reheating of het 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

A

c. Can significantly alter a metal’s properties
in the reheated area

27
Q

The pattern for an inclusion is a magnetic particle
build up forming

a. A fernlike pattern
b. A single line
c. Parallel lines

A

c. Parallel lines

28
Q

In the four-digit aluminum index system number
2024, the first digit indicates

a. The major alloying element
b. The number of major alloying elements used
in the metal
c. The percent of alloying metal added

A

a. The major alloying element

29
Q

A bolt with a single raised dash on the head is classified as an

a. AN corrosion-resistant steel bolt
b. NAS standard aircraft bolt
c. NAS close tolerance bolt

A

a. AN corrosion-resistant steel bolt

30
Q

A part which is being prepared for dye penetrant inspection should be clean with

a. A volatile petroleum-based solvent
b. The penetrant developer
c. Water-base solvents only

A

a. A volatile petroleum-based solvent

31
Q

What tool is generally used to set a divider to an exact dimension?

a. Machinist scale
b. Surface gauge
c. Dial indicator

A

a. Machinist scale

Natural science (7 decks)

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