25. (8271.) Excessive wear on both of the sides of a control cable pulley groove is evidence of
A—pulley misalignment.
B—cable misalignment.
C—excessive cable tension.
26. (8277.) Aircraft flight control trim systems must be designed and installed so that the
A—pilot can determine the relative position of the trim tab from the cockpit.
B—operating control and the trim tab will always move in the same direction.
C—trim system will disengage or become inoperative if the primary flight control system fails.
27. (8354.) What should be checked when a shock strut bottoms during a landing?
A—Air pressure.
B—Packing seals for correct installation.
C—Fluid level.
28. (8373.) An electric motor used to raise and lower a landing gear would most likely be a
A—shunt field series-wound motor.
B—split field shunt-wound motor.
C—split field series-wound motor.
29. (8397.) Pneumatic systems utilize
A—return lines.
B—relief valves.
C—diluter valves.
30. (8432.) The hydraulic component that automatically directs fluid from either the normal source or an emergency source to an actuating cylinder is called a
A—bypass valve.
B—shuttle valve.
C—crossflow valve.