(8126) Rivet gauge, or transverse pitch is the distance between the

a. centers of rivets in adjacent rows.

b. centers of adjacent rivets in the same row.

c. heads of rivets in the same row.

(8127) Rivet pitch is the distance between the

b. centers of adjacent rivets in the same row.

a. centers of rivets in adjacent rows.

c. heads of rivets in the same row.

(8129) What is indicated by a black 'smoky' residue streaming back from some of the rivets on an aircraft?

c. Fretting corrosion is occurring between the rivets and the skin.

a. Filiform corrosion is occurring between the rivets and the skin.

b. Intergranular corrosion is occurring between the rivets and the skin.

(8149) When riveting dissimilar metals together, what precautions must be taken to prevent an electrolytic action?

b. Place a protective separator between areas of potential electrical difference.

a. Treat the surfaces to be riveted together with a process called anodic treatment.

c. Avoid the use of dissimilar metals by redesigning the unit according to the recommendations outlined in AC 43.13-1A.

(8151) What is generally the best procedure to use when removing a solid shank rivet?

b. Drill to the base of the manufactured rivet head with a drill one size smaller than the rivet shank and remove the rivet with a punch.

a. Drill through the manufactured head and shank with a shank size drill and remove the rivet with a punch.

c. Drill through the manufactured head and shank with a drill one size smaller than the rivet and remove the rivet with a punch.

(8161) If a streamline cover plate is to be hand formed using a form block, a piece of dead soft aluminum should first be placed over the hollow portion of the mold and securely fastened in place. The bumping operation should be

b. started by tapping the aluminum lightly around the edges and gradually working down into the center.

a. distributed evenly over the face of the aluminum at all times rather than being started at the edges or center.

c. started by tapping the aluminum in the center until it touches the bottom of the mold and then working out in all directions.

(8163) When a piece of aluminum alloy is to be bent using a minimum radius for the type and thickness of material,

b. the layout should be made so that the bend will be 90° to the grain of the sheet.

a. the piece should be bent slowly to eliminate cracking.

c. less pressure than usual should be applied with the movable (upper) clamping bar.

(8165) If it is necessary to compute a bend allowance problem and bend allowance tables are not available, the neutral axis of the bend can be

b. found by adding approximately one-half of the stock thickness to the bend radius.

a. represented by the actual length of the required material for the bend.

c. found by subtracting the stock thickness from the bend radius.

(8166) Unless otherwise specified, the radius of a bend is the

a. inside radius of the metal being formed.

b. inside radius plus one-half the thickness of the metal being formed.

c. radius of the neutral axis plus one-half the thickness of the metal being formed.

(8168) The most important factors needed to make a flat pattern layout are

b. radius, thickness, and degree of bend.

a. radius, thickness, and mold line.

c. the lengths of the legs (flat sections).

(8170) You can distinguish between aluminum and aluminum alloy by

c. testing with a 10 percent solution of caustic soda.

b. testing with an acetic acid solution.

(8171) The purpose of a joggle is to

a. allow clearance for a sheet or an extrusion.

b. increase obstruction for a sheet or an extrusion.

c. decrease the weight of the part and still retain the necessary strength.

(8175) The sight line on a sheet metal flat layout to be bent in a cornice or box brake is measured and marked

c. one radius from the bend tangent line that is placed under the brake.

a. one-half radius from either bend tangent line.

b. one radius from either bend tangent line.

(8177) On a sheet metal fitting layout with a single bend, allow for stretching by

c. subtracting the setback from both legs.

a. adding the setback to each leg.

b. subtracting the setback from one leg.

(8179) In Gas Tungsten Arc (GTA) welding, a stream of inert gas is used to

prevent the formation of oxides in the puddle.

concentrate the heat of the arc and prevent its dissipation.

lower the temperature required to properly fuse the metal.

(8180) Which statement best describes magnesium welding?

Filler rod should be the same composition as base metal.

Magnesium can be welded to other metals.

Filler rod should be nickel-steel.

(8181) Which statement is true in regard to welding heat-treated magnesium?

The welded section does not have the strength of the original metal.

Flux should not be used because it is very difficult to remove and is likely to cause corrosion.

Magnesium cannot be repaired by fusion welding because of the high probability of igniting the metal.

AMT223 QB 3 and 4

Authored by Barry King

Other

University

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8041) A well-designed rivet joint will subject the rivets to

a. compressive loads.

b. shear loads.

c. tension loads

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8103) Shallow scratches in sheet metal may be repaired by

a. burnishing.

b. buffing.

c. stop drilling.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8106) A single-lap sheet splice is to be used to repair a section of damaged aluminum skin. If a double row of 1/8-inch rivets is used, the minimum allowable overlap will be

a. 1/2 inch.

b. 3/4 inch.

c. 13/16 inch.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8114) When repairing a small hole on a metal stressed skin, the major consideration in the design of the patch should be

a. the shear strength of the riveted joint.

b. to use rivet spacing similar to a seam in the skin.

c. that the bond between the patch and the skin is sufficient to prevent dissimilar metal corrosion.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8116) Repairs or splices involving stringers on the lower surface of stressed skin metal wings are usually

a. not permitted.

b. permitted only if the damage does not exceed 6 inches in any direction.

c. permitted but are normally more critical in reference to strength in tension than similar repairs to the upper surface.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8117) When straightening members made of 2024-T4, you should

a. straighten cold and reinforce.

b. straighten cold and anneal to remove stress.

c. apply heat to the inside of the bend.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

(8121) A factor which determines the minimum space between rivets is the

a. length of the rivets being used.

b. diameter of the rivets being used.

c. thickness of the material being riveted.

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