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!!!&!Block 16 - 0
Review Quiz
| Question | Answer |
|---|---|
| 1. The propeller governor maintains and controls the a. engine/propeller RPM b. blade angle for a specific RPM. c. the aircraft airspeed | engine/propeller RPM |
| 02. When correcting a static in-balance on a fixed-pitch propeller, the difference between a McCauley and a Sensenich Propeller is? a. you can add static balance weight to a McCauley b. you can add static balance weight to a Sensenich c. there are no differences between propellers | a. you can add static balance weight to a McCauley |
| 03. On an aircraft equipped with full feathering hydromatic propellers, when the feathering cycle is begun, after reaching the full feather position the blade immediately begin to unfeather the cause is: = a. The high pressure transfer valve is stuck in the open position = b. The pressure cut-out switch is stuck in the closed position = c. The distributor valve has malfunctioned | b. The pressure cut-out switch is stuck in the closed position |
| 04. Blade angles of a propeller = a. Increase from the tip to the shank = b. decrease from the tip to the shank = c. are proportional throughout the length of the blade | a. Increase from the tip to the shank |
| 05. The Angle of Attack is defined as the difference of the blade chord line and the relative wind. What two elements make up (define) relative wind? = a. propeller blade angle and propeller RPM = b. aircraft velocity and propeller speed = c. aircraft velocity and propeller blade angle | b. aircraft velocity and propeller speed |
| 06. Repair to the blade tips where diameter reduction is required, as an A&P = a. you may repair and shorten all the blade to the same length as long as you keep· the diameter within the type certificate diameter tolerance = b. you may repair only the damaged blades as necessary to remove the damage c. send the propeller to the repair station | c. send the propeller to the repair station |
| 07. Where are the highest vibrational stresses located in a propeller? = a. Blade Shank = b. Propeller hub = c. Near the blade tip | c. Near the blade tip |
| 08. How does a person identify the camber side of a propeller blade = a. it is the relative flat side of the blade that faces forward of the aircraft = b. it s the curves side of the blade that faces forward of the aircraft = c. it is the curved side of the blade that faces toward the rear of the aircraft | b. it s the curves side of the blade that faces forward of the aircraft |
| 09. A red arc located on an engine tachometer indicates = a. maximum engine RPM = b. critical range = c. engine oil pressure | b. critical range |
| 10. What are three of the forces or pressures that can be used to change the blade angle of a constant speed propeller? a. spring pressure, hydraulic pressure, torque bending force b. spring pressure, hydraulic pressure, air pressure c. hydraulic pressure, air pressure, thrust bending force | b. spring pressure, hydraulic pressure, air pressure |
| 11. What is the most dominant force acting on the propeller = a. Thrust bending = b. Torque bending = c. Centrifugal | c. Centrifugal |
| 12. Which type of propeller is mainly used on turboprop engines? = a. Reverse-pitch = b. Fixed-pitch = c. Non-feathering | a. Reverse-pitch |
| 13. Where does the oil supply for the Hartzell propeller system come from? a. Reservoir supply b. Engine oil supply c. Auxiliary oil supply | b. Engine oil supply |
| 14. What would repair to composite blades require? = a. Certified Propeller Repair Station = b. Mechanic with a powerplant rating = c. FAR part 135 | a. Certified Propeller Repair Station |
| 15. Which type of propeller is mounted on the upstream end of the driveshaft known as? a. Tractor b. Pusher c. Variable pitch | a. Tractor |
| 16. How is aircraft electrical power for propeller deicer systems transferred from the engine to the propeller hub assembly? = a. By slip rings and segment plates. = b. By slip rings and brushes. = c. By flexible electrical connectors. | b. By slip rings and brushes |
| 17. How is anti-icing fluid ejected from the slinger ring on a propeller? = a. By pump pressure. = b. By centripetal force. = c. By centrifugal force. | c. By centrifugal force. |
| 18. Propeller fluid anti-icing systems generally use which of the following? = a. Ethylene glycol. = b. lsopropyl alcohol. = c. Ethyl alcohol. | b. lsopropyl alcohol |
| 19. Ice formation on propellers, when an aircraft is in flight, will = a. decrease thrust and cause excessive vibration. = b. increase aircraft stall speed and increase noise. = c. decrease available engine power. | a. decrease thrust and cause excessive vibration. |
| 20. Proper operation of electric deicing boots on individual propeller blades may best be determined by = a. feeling the sequence of boot heating and have an assistant observe the loadmeter indications. = b. observing the ammeter or loadmeter for current flow. = c. feeling the boots to see if they are heating. | a. feeling the sequence of boot heating and have an assistant observe the loadmeter indications. |
| 21. Grease used in aircraft propellers reduces the frictional resistance of moving parts and is easily molded into any form under pressure. This statement defines = a. antifriction and plasticity characteristics of grease. = b. antifriction and chemical stability of grease. = c. viscosity and melting point of grease. | a. antifriction and plasticity characteristics of grease.z |
| 22. During engine operation at speeds lower than those for which the constant-speed propeller control can == govern in the INCREASE RPM position, the propeller will = a. remain in the full HIGH PITCH position. = b. maintain engine RPM in the normal manner until the HIGH PITCH stop is reached. = c. remain in the full LOW PITCH position. | c. remain in the full LOW PITCH position. |
| 23. What actuates the pilot valve in the governor of a constant-speed propeller? = a. Engine oil pressure. = b. Governor flyweights. = c. Governor pump oil pressure. | b. Governor flyweights. |
| 24. What action takes place when the cockpit control lever for a hydromatic, constant-speed propeller is actuated? = a. Compression of the speeder spring is changed. = b. The governor booster pump pressure is varied. = c. The governor bypass valve is positioned to direct oil pressure to the propeller dome. | a. Compression of the speeder spring is changed. |
| 25. What operational force causes the greatest stress on a propeller? = a. Aerodynamic twisting force. = b. Centrifugal force. = c. Thrust bending force. | b. Centrifugal force |
| 26. What operational force tends to increase propeller blade angle? = a. Centrifugal twisting force. = b. Aerodynamic twisting force. = c. Thrust bending force. | b. Aerodynamic twisting force. |
| 27. How can a steel propeller hub be tested for cracks? = a. By anodizing. = b. By magnetic particle inspection. = c. By etching. | b. By magnetic particle inspection |
| 28. The propeller blade angle is defined as the acute angle between the airfoil section chord line (at the blade reference station) and which of the following? = a. The plane of rotation. = b. The relative wind. = c. The axis of blade rotation during pitch change. | a. The plane of rotation |
| 29. 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. | c. High-speed, high-altitude cruising flight |
| 30. What is the result of moving the throttle on a reciprocating engine when the propeller is in the constant-speed range with the engine developing cruise power? = a. Opening the throttle will cause an increase in blade angle. = b. The RPM will vary directly with any movement of the throttle. = c. Movement of the throttle will not affect the blade angle. | a. Opening the throttle will cause an increase in blade angle |
| 31. The thrust produced by a rotating propeller is a result of = a. an area of low pressure behind the propeller blades. = b. an area of decreased pressure immediately in front of the propeller blades. = c. the angle of relative wind and rotational velocity of the propeller. | b. an area of decreased pressure immediately in front of the propeller blades. |
| 32. The low pitch stop on a constant-speed propeller is usually set so that = a. The engine will turn at its rated takeoff RPM at sea level when the throttle is opened to allowable takeoff manifold pressure. = b. maximum allowable engine RPM cannot be exceeded with any combination of manifold pressure, altitude, or forward speed. = c. the limiting engine manifold pressure cannot be exceeded with any combination of throttle opening, altitude, or forward speed. | a. The engine will turn at its rated takeoff RPM at sea level when the throttle is opened to allowable takeoff manifold pressure. |
| 33. The holding coil on a hydromatic propeller feathering button switch holds a solenoid relay closed that applies power to the propeller = a. governor. = b. dome feathering mechanism. = c. feathering pump motor. | c. feathering pump motor |
| 34. The purpose of permanently sealing and partially filling some models of McCauley propeller hubs with dyed oil is to = a. provide an always clean separate lubrication of the internal parts. = b. dampen pressure surges and prevent too rapid changes in propeller blade angle. = c. make the location of cracks readily apparent. | c. make the location of cracks readily apparent. |
| 35.During operational check of an aircraft using hydromatic full-feathering propellers, the following observations are made: The feather button, after being pushed, remains depressed until the feather cycle is complete, then opens. When unfeathering, it is necessary to manually hold the button down until unfeathering is accomplished. == a. Both feather cycle and unfeather cycle are functioning properly. == b. Both feather and unfeather cycles indicate malfunctions. == c. The feather cycle is correct. The un | c. The feather cycle is correct. The unfeather cycle indicates a malfunction |
| 36. Inspection of propeller blades by dye-penetrant inspection is accomplished to detect = a. cracks or other defects. = b. corrosion at the blade tip. = c. torsional stress. | a. cracks or other defects. |
| 37. 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 hole, or elongated bolt holes. = c. No protective coating on the propeller. | b. An oversize hub or bolt hole, or elongated bolt holes. |
| 38. Longitudinal (fore and aft) clearance of constant-speed propeller blades or cuffs must be at least 1/2 inch (12.7 mm) between propeller parts and stationary parts of the aircraft. This clearance is with the propeller blades a. at takeoff pitch (maximum thrust) angle. b. feathered or in the most critical pitch configuration. c. at the lowest pitch angle. | b. feathered or in the most critical pitch configuration |
| 39. What is indicated when the front cone bottoms while installing a propeller? a. Propeller-dome combination is incorrect. = b. Blade angles are incorrect. = c. Rear cone should be moved forward. | b. feathered or in the most critical pitch configuration |
| 40. How is the oil pressure delivery on a hydromatic propeller normally stopped after the blades have reached their full-feathered position? = a. Pulling out the feathering push butt0n. = b. Electric cutout pressure switch. = c. Stop lugs in the teeth of the rotating cam. | b. Electric cutout pressure switch. |
| 41. The primary purpose of the front and rear cones for propellers that are installed on splined shafts is to = a. position the propeller hub on the splined shaft. = b. prevent metal-to-metal contact between the propeller and the splined shaft. c. reduce stresses between the splines of the propeller and the splines of the shaft. | a. position the propeller hub on the splined shaft |
| 42. Oil leakage around the rear cone of a hydromatic propeller usually indicates a defective = a. piston gasket. = b. spider-shaft oil seal. = c. dome-barrel oil seal. | b. spider-shaft oil seal. |
| 43. Propeller blade tracking is the process of determining = a. the plane of rotation of the propeller with respect to the aircraft longitudinal axis. = b. that the blade angles are within the specified tolerance of each other. = c. the positions of the tips of the propeller blades relative to each other. | c. the positions of the tips of the propeller blades relative to each other. |
| 44. Manually feathering a hydromechanical propeller means to = a. block governor oil pressure to the cylinder of the propeller. = b. port governor oil pressure to the cylinder of the propeller. = c. port governor oil pressure from the cylinder of the propeller. | c. port governor oil pressure from the cylinder of the propeller |
| 45. Minor surface damage located in a repairable area, but not on the leading or trailing edges of aluminum blades, may be repaired by first = a. filing with a riffle file. = b. filing with a half round or flat file. = c. rough sanding and applying a proper filler. | a. filing with a riffle file. |
| 46. Which of the following functions requires the use of a propeller station? = a. Propeller balancing = b. Indexing blades = c. Measuring blade angle == d. To reduce to conform with a shorten blade | c. Measuring blade angle |
| 47. What is the purpose of an arbor used in balancing a propeller? = a. To level the balance stand = b. To mark the propeller blades where weights are to be attached = c. To support the propeller on the balance knives = d. To check a three bladed propeller assembly with each blade placed in downward | c. To support the propeller on the balance knives |
| 48. What three forces act on rotating propeller? = a. Torque bending force, Thrust bending force, Slipstream force = b. Torque bending force, Thrust bending force, Buffet force = c. Aerodynamic twisting force, Torque bending force, Thrust bending force = d. Compression force, Spiraling slipstream, Accelerated slipstream | c. Aerodynamic twisting force, Torque bending force, Thrust bending force |
| 49. If the propeller rpm is fixed and the airspeed increases, the angle attack of the blade: = a. Decrease = b.Remain the same = c. Increase | a. Decrease |
| 50. What are the two ranges of the power level quadrant? = a. Alpha/Beta = b. Beta/Delta = c. Alpha/Charlie = d. Beta/Charlie | a. Alpha/Beta |
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