Materials & Processes (3)

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

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

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

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

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

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

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

What tool is generally used to calibrate a micrometer or check its accuracy? a. Gauge block b. Dial indicator c. Machinist scale

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

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

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 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

What may be used to check the stem on a poppet-type valve for stretch? a. Dial indicator b. Micrometer c. Telescoping gauge

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

Which of the following methods may be suitable to use to detect cracks open to the surface in aluminum forgings and castings? • Dye penetrant inspection • Magnetic particle inspection • Metallic ring (coin tap) inspection • Eddy current inspection • Ultrasonic inspection • Visual inspection a. 1,4,5,6 b. 1,2,4,5,6 c. 1,2,3,4,5,6

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

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

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 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

Liquid penetrant inspection methods may be used on which of the following? • Porous plastics • Ferrous metals • Nonferrous metals • Smooth primer-sealed wood • Nonporous plastics a. 2,3,4 b. 1,2,3 c. 2,3,5

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

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

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

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