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!!!Block 14 Q4

Quiz 4 -- 50

QuestionAnswer
1. What conducts electricity from the high voltage coil to the spark plug? (Choose the best answer) The Condenser The Internal Magneto Brush The Impulse coupling The Internal Magneto Brush
2. A typical magneto housing is made from. Aluminum Platinum Steel Aluminum
3. Why do aviation spark plugs contain built in resistors? To prevent engine kick-back To prevent capacitance after-firing To increase the life of the spark plug To prevent capacitance after-firing
4. Magnetos are vented to dispel exhaust manifold gasses. (True or False?) False True False
5. How many types of fouling are possible on aviation spark plugs? 2, 3 ,4 , 5 4
6. Are all magnetos pressurized? Yes No No
7. A faulty spark plug will cause rough engine performance at what speed? Idle Max RPM All Speeds All Speeds
8. What is the danger of over torquing a spark plug? Internal seals within the spark plug may become dislodged and allow hot combustion gasses to enter Capacitance after-firing Advancing the timing Internal seals within the spark plug may become dislodged and allow hot combustion gasses to enter
9. How many types of carburetor ice have we discussed in class? 1, 2, 3, 4 3 throttle ice, fuel vaporization ice, impact ice.
10. What would be the result if carburetor heat was placed on during take-off? Excessive fuel consumption Engine rough running and possible detonation Exhaust leaks Engine rough running and possible detonation
11. What is the purpose of "Alternate Air Doors" used on many aircraft? To cool the engine To supply filtered air to the engine in the event the main filter becomes blocked To supply unfiltered air to the engine in the event the main filter becomes blocked To supply unfiltered air to the engine in the event the main filter becomes blocked
12. What is the biggest danger of exhaust leaks? Engine malfunction Excessive fuel-air ratio Pilot & passenger incapacitation due to carbon dioxide poisoning Pilot & passenger incapacitation due to carbon monoxide poisoning Pilot & passenger incapacitation due to carbon monoxide poisoning
13. What position should carburetor heat be placed in during start and take-off? Full cold / Off Full Hot / On It does not matter Full cold / Off
14. What effect will there be to the fuel-air ratio when carburetor heat is applied? Run Rich Run Lean No effect Run Rich
15. What is the primary reason for Turbocharging or Supercharging an aircraft engine? Increase Speed Increase the altitude capability of the aircraft To increase fuel economy Increase the altitude capability of the aircraft
16. How is a reciprocating aircraft engine shut off under normal conditions? Turn off the magnetos Starving the engine of fuel until it quits Reducing the RPM to idle Turning off the voltage regulator Manually closing off the primary air filter Starving the engine of fuel until it quits
17. Turboshaft engines use a bellmouth inlet to maximize efficiency because they do not receive direct RAM air. True or false? False True True
18. What are the 2 basic types of reciprocating engine spark plugs? Fine Electrode and Massive Wire Massive Electrode and Fine Wire Fine Electrode and Fine Wire Massive Electrode and Fine Wire
19. What is the FAR that describes reciprocating engine ignition requirements? 33.37 33.20 35.37 33.37
20. What solvent is approved for internal cleaning of a Slick magneto? MEK Aeromatic Naptha Alaphatic Naptha Acetone Acetone
21. Fine wire spark plugs are more expensive; more brittle to gapping but last longer. (True or False?) False True True
22. Recip starters do not turn the engine fast enough to produce a good spark unless the magneto has an impulse coupling. Yes or No? Yes No Yes... But; the engine may be started if it has a "Retard Breaker / Shower of Sparks" system Yes... But; the engine may be started if it has a "Retard Breaker / Shower of Sparks" system
23. Which side of the engine is the magneto with an impulse coupling traditionally installed on? Right Left Does not matter Left
24. Reciprocating engine starting systems can be broken down into 2 basic categories. They are. High Tension & Low Tension Magneto & FADEC Magneto & High Capacitance Type Magneto & FADEC
25. Internal magneto plastic components may be coated in _____________________ to prevent carbon tracking & flashover. (Fill in the blank) Rubber Wax Aluminum Wax
26. While inspecting magneto breaker points; it is important not to pry open the point assy too wide which may damage the spring steel. This may cause. Internal Arcing Engine Backfiring Float or Bounce Float or Bounce
27. A low tension magneto system (usually used on older radial engines) require. Additional grounding A second set of breaker points A secondary transformer coil located before each spark plug A secondary transformer coil located before each spark plug
28. A "Safety Gap" may be incorporated into a magneto to help protect the insulation of the. Low voltage secondary circuit High voltage secondary circuit Low voltage primary circuit High voltage primary circuit Magnetic circuit High voltage secondary circuit
29. How are the condenser / capacitor and the magneto cockpit switch wired in relationship to the breaker points? In Series In Parallel The condenser / capacitor is not wired to the breaker points In Parallel
30. The primary coil in a high tension magneto consists of. Approx 200 wraps of fine gauge wire Approx 200 wraps of thick gauge wire Approx 20,000 wraps of fine gauge wire Approx 200 wraps of thick gauge wire
31. Pole shoes are made of. Laminations of high grade soft aluminum Laminations of high grade hard iron Laminations of high grade soft iron Teflon in order to prevent flashover Laminations of high grade soft iron
32. The linear distance from the spark plug gasket seat to the end of the threaded barrel is referred to as__________ The Grip The Reach The Thread Count The Reach
33. All air entering a gas turbine engine (regardless of type) must be. Below Mach 1 Above Mach 1 Below Mach 1
34. A Thrust producing engine such as a TurboJet or TurboFan must have an exhaust nozzle design that is. Convergent Divergent Straight Convergent
35. When does the greatest density of flux exist in a magneto? (Rotating Magnet in relation to the pole shoes) Full Register Neutral A Few Degrees after Neutral (E-Gap) A Few Degrees Before Neutral (E-Gap) Full Register
36. We say: The greatest amount of "field stress" occurs at... (Magnet position in relation to pole shoes) Full Register Neutral A Few Degrees after Neutral (E-Gap) A Few Degrees Before Neutral (E-Gap) A Few Degrees after Neutral (E-Gap)
37. Name the types of turbine engine ignitor plugs that we have discussed in class. Choose all that apply. Massive Electrode Constrained Gap Fine Wire Annular Gap Shunted Electrode Constrained Gap & Annular Gap
38. What is the most common type of ignition system used on gas turbine engines? Low Energy Capacitance Discharge High Energy Capacitance Discharge Redundant Discharge High Energy Capacitance Discharge
39. What would be the result of adjusting the breaker points too wide during magneto internal timing? Timing would retard and voltage output would be reduced Timing would advance and voltage output would be reduced No impact on timing Timing would advance and voltage output would be reduced
40. When setting up timing on an engine; timing is typically set to approx. 25 deg after TDC 25 deg before TDC Exactly at TDC 25 deg before TDC
41.How many functions are performed by the condenser / capacitor in a high tension magneto? 1 – 2 – 3 – 4 2
42. Spark plug electrodes as well as motor brushes are considered to be worn out and must be replaced when they are approx ________________ their original size. 1/4 – 1/2 – 1/3 1/2
43. The 2 most common types of spark plugs are. Massive Electrode & Fine Wire Massive Electrode & Constrained Type Long reach & Short Reach Massive Electrode & Fine Wire
44. The operating of an electrical device such as a starter motor or exciter box has a limit to how many times it can be engaged without allowing it to rest / cool down. What is this called? Duty Limit Duty Cycle Cycle Limit Cycle Life Duty Cycle
45. What is the most common method to prevent carburetor ice? Injecting alcohol into the carburetor Using heated air from a shroud wrapped around an exhaust component Electrically heating the carburetor Using heated air from a shroud wrapped around an exhaust component
46.There is no such thing as an acceptable exhaust leak. Is this statement True or False? False – True True
47. TurboJet engines produce torque. Is this statement true or false? True – False False TORQUE producing:: piston engines, turboprop, and turboshaft. THURST:: jet(turbojets, turbofans), propellers, and rockets
48.What happens to air density as the aircraft limbs to altitude? Air Density Increases Air Density Decreases Air Density remains the same Air Density Decreases
49. Carburetor ice can only occur at outside air temperatures below freezing. Is this statement True or False? False – True False
50. During flight; if carburetor heat is applied and the engine runs rough for a short time and then recovers; what is happening? The engine is damaged Ice has already formed and begins to melt off The muffler has a leak Ice has already formed and begins to melt off
Created by: sampizzuto
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