a) Independently of the engine. b) By varying the engine RPM except for feathering and reversing. c) By varying the gear ration between the propeller and the engine. * d) By the engine power lover. 219- How does the aerodynamic twisting force affect operating propeller blades? a) It tends to bend the blades opposite the direction of rotation. * b) It tends to turn the blades to a high blade angle. c) It tends to bend the blades forward. d) It tends to turn the blades to a low blade angle. 220- Propellers exposed to salt spray should be cleaned with: a) A caustic solution. b) Steel wool. c) Fresh water. * d) Soapy water. 221- Which of the following functions requires the use of a propeller blade station? * a) Measuring blade angle. b) Installation and removal of propeller. c) Indexing blades. d) Propeller balancing.
222- During which of the following conditions of flight will the blade pitch angle of a constant speed propeller be the greatest ? a) Approach to landing. b) Climb following takeoff. * c) High – speed, high altitude cruising flight. d) Takeoff from sea level. 223- The CTM (centrifugal twisting moment) of an operating propeller tends to: a) Increase the pitch angle. * b) Reduce the pitch angle. c) Bend the blades in the direction of rotation. d) Bend the blades rearward in the line of flight. 224- Hydromatic propeller pitch change gear preload may be adjusted by : a) Moving the vernire preload lock plate clockwise to increase preload and anticlockwise to reduce preload . b) Adjusting the stop plate that limits the movement of the movable cam within The stationary cam . c) Varying the spider shim thickness used between the spider shim plate and the blade bushing face . * d) Varying the thickness of the shims between the fixed cam base and the dome barrel shelf . 225- The blade angle of a fixed – pitch propeller: a) Is greatest at the tip. b) Is constant from the hub to the tip. * c) Is smallest at the tip. d) Increases in proportion to the distance each section is from the hub. 226- For takeoff, a constant speed propeller is normally set in the: a) High pitch, high RPM position. b) Low pitch, low RPM position. c) High pitch, low RPM position. * d) Low pitch, high RPM position. 227- Which of the following defects is cause for rejection of wood propellers? a) Solder missing from screw heads securing metal tipping. * b) An oversize hub or bolt, or elongated bolt holes. c) No moisture drain holes in metal tipping. d) No protective coating on propeller. 228- Why is it important that nicks in the leading edge of aluminum alloy blades be removed as soon as possible ? a) To localize vibratory stress. b) Horizontal balance purposes. c) To improve the aerodynamic characteristics of the blades. * d) To eliminate the condition where fatigue cracks can start.
229- Major repairs to aluminum alloy propellers and blades may be done by: a) A power plant mechanic working for a certificated A&P mechanic.
- Summer '17
- sajad heidari
- Propeller, Blade Angle, propeller blade