19. (8098.) When holes are drilled completely through Plexiglas, a
A—standard twist drill should be used.
B—specially modified twist drill should be used. C—wood drill should be used.
20. (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.
21. (8141.) Most rivets used in aircraft construction have
A—dimples.
B—smooth heads without markings.
C—a raised dot.
22. (8194.) A very thin and pointed tip on a soldering copper is undesirable because it will
A—transfer too much heat to the work.
B—have a tendency to overheat and become brittle.
C—cool too rapidly.
23. (8239.) If the right wing of a monoplane is improperly rigged to a greater angle of incidence than designated in the manufacturer's specifications, it will cause the
A—airplane to be off balance both laterally and directionally.
B—airplane to pitch and roll about the lateral axis.
C—right wing to have both an increased lift and a decreased drag.
24. (8260.) If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be A—the full rated strength of the cable.
B—80 percent of the full rated strength of the cable.
C—70 percent of the full rated strength of the cable.