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Eng. Fuel sys.
FAA AMP
| Question | Answer |
|---|---|
| the primary condition(s) that allow(s) microorganisms to grow in the fuel in aircraft fuel tanks is (are) | the precense of water |
| what is the purpose of an engine-driven fuel pump bypass valve? | to prevent a damaged or inoperative pump from blocking fuel flow of another pump in series with it |
| a fuel strainer or filter must be located between the | tank outlet and the fuel metering device |
| fuel pump relief valves designed to compensate for atmospheric pressure variations are know as | balanced-type relief valves |
| fuel pressure produced by engine-driven fuel pump is adjusted by the | relief valve adjusting screw |
| what is the purpose of the flow divider in a turbine engine duplex fuel nozzle? | creates the primary and secondary fuel supplies |
| fuel boost pumps are operated | to provide a posititve flow of fuel to the engine |
| what is the final authority for the details of carburator overhaul? | the manufacturers recommendations |
| where is the engine fuel shutoff valve usually located? | aft of the firewall |
| the fuel systems of an aircraft certificated in the standard classification must include which of the following? | a positive means of shutting off the fuel to all engines |
| kerosene is used as turbine engine fuel because | kerosene has more heat energy per gallon and lubricates fuel system components |
| the purpose of the diaphram in most vane-type fuel pump is to | compensate fuel pressures to altitude changes |
| which statement is true regarding proper throttle rigging of an airplane? | the throttle stop on the carburator must be contacted before the stop in the cockpit |
| it is necessary to control acceleration and deceleration rates in turbine engines in order to | prevent blowout or die-out |
| fuel lines are kept away from sources of heat, and sharp bends and steep rises are avoided ro reduce the posibility of | vapor lock |
| boost pumps in a fuel system | provide a positive flow of fuel to the engine pump |
| what are the principal advantages of the duplex fuel nozzle used in many turbone engines? | provides better atomization and uniform flow pattern |
| what is a characteristic of a cerntrifugal- type boost pump? | it seperates air and vapor from the fuel |
| where is the main fuel strainer located in the aircraft fuel system? | at the lowest point in the fuel system |
| a fuel pressure relief valve is required on | engine-driven vane-type pumps |
| which of the following turbine fuel filters has the greatest filtering action of any present day filter type? | micron filter |
| the fuel pump relief valve directs excess fuel to the | inlet side of the fuel pump |
| if an engine equipped with a float-type carburator backfires or misses when the throttle is advanced, a likely a cause is | acceleration pump is not operating properly |
| what causes the fuel dovoder valve to open in a turbine engine duplex fuel nozzle? | fuel pressure |
| how often should flat carburators be overhauled? | at engine overhaul |
| the federal aviation regulations require the fuel flow rate of every gravity system (main and reserve) to be | 150 percent of the takeoff fuel consumption of the engine |
| which type of pump is commonly used as a fuel pump on reciprocating engines? | vane-type pump |
| (refer to figure 7) what is the purpose of the fuel transfer ejectors? | to assist in the transfer of fuel from the main tank to the boost sump tank |
| fuel crossfeed systems are used in aircraft to | maintain aircraft stability |
| a pilot reports that the fuel pressure fluctuates and exceeds the upper limits whenever the throttle is advanced. the most likely cause of the trouble is | a stricking fuel pump relief valve |
| most large aircraft reciprocating engines are equipped with which of the following types of engine-driven pumps? | rotary vane-type fuel pump |
| where physical seperation of the fuel lines from electrical wiring or conduit is impracticable, locate the fuel line | below the wiring and c;amp the line securely to the airframe structure |
| maximum power is normally considered to be developed in a reciprocating engine with fuel/air mixture ratio of | 12:1 |
| when an electrical primer is used, fuel pressure is built up by the | booster pump |
| excessivly rich or lean idle mixtures result in | incomplete combustion |
| what precaution should be taken when putting thread lubricant on a tapered pipe plug in a carburator float bowl? | engage the first thread of the plug, then put a small amount of lubricant on the second thread and screw the plug in |
| during what period does the fuel pump bypass valve open and remain open? | when the boost pump pressure is greater than fuel pump pressure |
| it is desirable that fuel lines have a gentle slope upward or downward and not have sharp curves or sharp rises and/or falls in order to | prevent vapor lock |
| which of the following statements concerning a centrifugal-type fuel boost pump located in a fuel supply tank is NOT true? | a centrifugal-type pump is classified as a positive displacement pump |
| a rotary-vane pump is best described as a | positive-displacement pump |
Created by:
cordon.gabriel
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