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Fuel Systems

Airframe written

QuestionAnswer
The purpose of a diaphragm in a vane-type fuel pump is to compensate fuel pressure to altitude changes
Fuel system components must be bonded and grounded in order to drain off static charges
The presence of fuel stains around a fuel nozzle would indicate clogged fuel nozzle
A fuel system must be designed to prevent fuel-vapor ignition caused by lightning
Which of the following would give the first positive indication that a change-over from one fuel tank to another is needed? fuel pressure warning
What type of remote-reading fuel quantity indicating system has several probes installed in each fuel tank? electronic
As a general rule, which statement is true regarding fuel leaks? Stains, seeps, and heavy seeps (in addition to running leaks), are considered flight hazards when located in unvented areas of the aircraft
How many vents, arranged so that they are not likely to become plugged at the same time, must be used in multiengine fuel systems? 2
A transducer in a fuel pressure system serves what function? Converts fluid pressure directly through a transmitter to the indicator
Where is fuel pressure taken for the pressure warning signal on most aircraft engines? Fuel pressure line of the carburetor
The vapor pressure of aviation gasoline is lower than the vapor pressure of automotive gas
What is the dielectric (nonconducting material) in a capacitance-type fuel quantity indicating system? Fuel and air in the tank
The fuel jettison valve must be designed to allow flight personnel to close the valve at any time and the fuel must discharge clear of the aircraft
What unit is generally used to actuate the fuel pressure warning system? Pressure-sensitive mechanism
What type of fuel-booster pump requires a pressure relief valve? Sliding vane
The electronic-type fuel quantity indicating system consists of a bridge circuit, an amplifier, an indicator, and a tank unit
Why are integral fuel tanks used in many large aircraft? To reduce weight
Which of the following is employed to maintain lateral stability when jettisoning fuel? 2 separate independent systems
Which of the following precautions is most important during refueling operations? Fuel to be used must be appropriately identified
One advantage of electrical and electronic fuel quantity indicating systems is that the indicator can be located any distance from the tanks
When fuel quantity is measured in pounds instead of gallons, the measurement will be more accurate because fuel volume varies with temperature change
Some turbine powered aircraft have a fuel temperature indicator located in the cockpit to monitor the fuel temperature during high altitude flight
A digital fuel totalizer automatically indicates the amount of fuel used, fuel remaining, current rate of consumption, and fuel weight aboard at takeoff
What is the maximum vapor pressure allowable for an aircraft fuel? 7 psi
How does temperature affect fuel weight? Cold fuel is heavier per gallon
What is the minimum distance allowed between a fuel tank and the fire wall separating the engine? 1/2 inch
If a bladder-type fuel tank is to be left empty for an extended period of time, the inside of the tank should be coated with a film of engine oil
Many fuel tanks incorporate _________________ valves to prevent fuel from flowing away from the boost pump or tank outlet when the aircraft is in a high 'G' maneuver. flapper
Pressure fueling of aircraft is usually accomplished through at least one single point connection
A drip gauge may be used to measure the amount of fuel in the tank
The use of turbine fuels in aircraft has resulted in some problems not normally associated with aviation gasolines. One of these problems is microbial contaminants
When moving the mixture control on a normally operating engine into the idle cutoff position, engine RPM should slightly increase before the engine starts to die
What flight safety-related advantage does a pressure fueling system provide? Reduces the chances for fuel comtamination
In some aircraft with several fuel tanks, the possible danger of allowing the fuel supply in one tank to become exhausted before the selector valve is switched to another tank is prevented by the installation of a fuel pressure warning signal system
Flapper valves are used in fuel tanks to act as a check valve
What is the recommended practice for cleaning a fuel tank before welding? Steam clean the tank interior
A fuel jettison system is required under certain conditions if the maximum takeoff weight exceeds the maximum landing weight. What regulations cover the requirements of fuel jettisoning? 14 CFR Parts 23 and 25 and CAM 4b.
Which aircraft fuel quantity indicating system incorporates a signal amplifier? Electronic
What precautions must be observed if a gravity-feed fuel system is permitted to supply fuel to an engine from more than one tank at a time? The tank airspaces must be interconnected
What should be used to remove flux from an aluminum tank after welded repairs? 5% solution of nitric or sulfuric acid
The probe of a capacitance-type fuel level gauge is essentially a capacitor with fuel and air acting as a dielectric
Why is the main fuel strainer located at the lowest point in the fuel system? It traps any small amount of water that may be present in the fuel system
In an electronic-type fuel quantity indicating system, the tank sensing unit is a capacitor
A probe or a series of probes is used in what kind of fuel quantity indicating system? Capacitor
The type of fuel-boost pump that separates air and vapor from the fuel before it enters the line to the carburetor is the centrifugal-type pump
Select one means of controlling the fuel temperature on turbine-powered aircraft. Engine bleed air to a heat exchanger
On a large aircraft pressure refueling system, a pressure refueling receptacle and control panel will permit one person to fuel or defuel any of the tanks on an aircraft
When inspecting a removable rigid fuel tank for leaks, what procedure should be followed? pressurize the tank with air and brush with soapy water
Created by: mattpayne001
 

 



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