b) Go to high pitch. c) Remain unchanged. d) Fluctuate between high and low pitch position. 191- How do you remove a dent from the edge of a steel propeller? a) Grind it out with an emery wheel. b) Not necessary to do anything. c) Fill with solder and polish off. * d) File to a smooth curve ad polish. 192- What is used to measure the angle of a propeller? a) Incidence board. b) Tee square. c) Timing protector. * d) Bubble propeller protractor. 193- The most efficient propeller form the theoretical standpoints has what number of blades ? * a) One b) Two c) three d) four 194- Why do you place the propeller in – low pitch for take – off? a) To keep the engine cool during take – off. * b) In order to obtain maximum horsepower. c) Not a true statement for all types. d) To increase suction through carburetor intake. 195- The etching process is used during propeller overhaul to: a) Identify un-airworthy components. * b) Detect blade defects. c) Identify the blades. d) Indicate the overhauling agency name and certificate number. 196- If you remove the tip of a metal propeller blade that was damaged, the other blade or blades should be : a) Etched. b) Re- indexed. * c) Shortened the same amount. d) all of the above. 197- How is electrical power transferred from the hub to the blades during electrical deicing ? * a) Slip – rings & brushes. b) Flexible connectors. c) Thermal relays. d) Collector ring & contacts.
198- How is deicing fluid ejected from the propeller slinger ring ? * a) Centrifugal force. b) Centripetal force. c) Pump pressure. d) Ejectors. 199- If number of blades increase prop. Efficiency decreases, this is due to: a) Increased weight. b) Complexity. c) Difficulty in balance. * d) Each blade very closely following the path of the preceding blade. 200- Where is the low pressure area when a propeller is operating? a) On the blade face. * b) On the blade back. c) On the flat side of blade. d) In the slipstream. 201- The propeller is lined up on the crankshaft by : a) Cones * b) Splines c) spacer d) retaining clamps 202- Propeller blades are usually checked for “track “at the: a) 24 inch station. b) 42-inch station. c) Shank of each blade. * d) Tip of each blade. 203- If you find small transverse cracks in an aluminum alloy propeller blade you should : a) Saucer them out to a smooth shape. b) Smooth them out with a fine stone. c) Reject the blade as not repairable. * d) Remove rough edges with No.000 emery cloth . 204- The theoretical pitch of a propeller is determined by the designer and is also known as : * a) Geometric pitch. b) Actual pitch. c) Summary pitch. d) Slippage pitch. 205- An engine runs satisfactorily in low pitch but rough when changed to high pitch The most probable cause is: a) Faulty ignition. b) Improper static balance of the propeller. * c) High pitch stops are set incorrectly. d) Low pitch stops are set incorrectly.
206- You would convert a left hand propeller governor to a right hand prop governor by: a) Reversing the propeller shaft spline coupler.
- Summer '17
- sajad heidari
- Propeller, Blade Angle, propeller blade