Fuel system part 2

A transducer in a fuel pressure system serves what function?. Transmits an electrical signal to the transmitter for fluid pressure. Transmits electrical signal proportional to the fluid pressure. Converts fluid pressure directly through a transmitter to the indicator.

Which of the following is employed to maintain lateral stability when jettisoning fuel?. Two separate independent systems. Crossfeed system. Two interconnected systems.

Which procedure must be followed when defueling aircraft with sweptback wings?. Defuel all the tanks at one time. Defuel the inboard wing tanks first. Defuel the outboard wing tanks first.

Entrained water in aviation turbine fuel is a hazard because of its susceptibility to freezing as it passes through the filters. What are common methods of preventing this hazard?. Micromesh fuel strainers and fuel heater. High-velocity fuel pumps and fuel heater. Anti-icing fuel additives and fuel heater.

A fuel pressure relief valve is required on an aircraft. positive-displacement fuel pump. centrifugal boost fuel pump. positive-displacement fuel pump and centrifugal boost fuel pump.

The presence of fuel stains around a fuel nozzle would indicate. too much fuel pressure. excessive airflow across the venturi. clogged fuel nozzle.

A fuel system must be designed to prevent fuel-vapor ignition caused by. over-heating. back-fire. lightning.

How many engine driven fuel pumps per engine are required for engines requiring fuel pumps?. Two engines can share one fuel pump. One fuel pump for each engine. Two fuel pumps for each engine.

(Refer to Figure 17.) What is the purpose of the pump crossfeed valve?. Balance the fuel in the tanks. Allow operation of engines from one tank. Allow operation of the left engine when the right fuel-boost pump is inoperative.

Which of the following may be used for the repair of fuel leaks on most integral fuel tanks?. Welding and resealing. Brazing and resealing. Riveting and resealing.

Some turbine powered aircraft have a fuel temperature indicator located in the flight deck to. monitor the fuel flow in the event that ice crystals form in the fuel system. monitor the fuel temperature during high altitude flight. ascertain the amount of fuel onboard the aircraft when ice starts to form in the fuel tanks.

An electrical type fuel quantity indicating system consists of an indicator in the flight deck and a float. in the tank that moves a connecting arm to the wiper on a variable resistor in the tank. attached to a rod that moves up or down in a calibrated cylinder. in the tank that operates with alternating current and uses constant resistance in a circuit to drive a ratiometer-type indicator.

Which of the following statements is true?. Gas-turbine-engine fuel systems are not susceptible to the formation of ice in the fuel filters. A fuel heater operates as a heat disperser to cool the fuel. Gas-turbine-engine fuel systems are very susceptible to the formation of ice on the fuel filters.

Fuel heaters are used with fuel systems for turbine engines to prevent ____________ in the fuel from clogging system filters. moisture. ice crystals. contamination.

In an electronic-type fuel quantity indicating system, the tank sensing unit is a. capacitor. variable resistor. variable inductor.

A typical large transport aircraft fuel manifold system allows which of the following?. Tanks must be serviced through multiple connections. Engines can be fed only from a specified tank. A damaged tank can be isolated from the rest of the fuel system.

According to Part 23, what minimum required markings must be placed at or near each appropriate fuel filler cover for reciprocating engine-powered airplanes?. The word 'Avgas' and the minimum fuel grade. The word 'Fuel' and usable fuel capacity. The word 'Avgas' and the total fuel capacity.

Where is fuel pressure taken for the pressure warning signal on most aircraft engines?. Outlet side of the boost pump. Fuel pressure line of the carburetor. Between the fuel pump and the strainer.

Which of the following tests can determine an aviation gasoline's tendency to vapor lock?. Reid vapor pressure test. Octane vapor pressure test. True vapor pressure test.

Why are jet fuels more susceptible to water contamination than aviation gasoline?. Jet fuel has a higher viscosity than gasoline. Jet fuel is lighter than gasoline; therefore, water is more easily suspended. Condensation is greater because of the higher volatility of jet fuels.

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. to discharge fuel clear of the aircraft. to close the valve at anytime.

A transmitter in a fuel pressure warning system serves what function?. Transmits an electrical signal to fluid pressure. Converts fluid pressure to an electrical signal. Transmits fluid pressure directly to the indicator.

What unit is generally used to actuate the fuel pressure warning system?. Fuel flowmeter. Pressure-sensitive mechanism. Fuel pressure gauge.

What is the purpose of a float-operated transmitter installed in a fuel tank?. It sends an electric signal to the fuel quantity indicator. It senses the total amount of fuel density. It senses the dielectric qualities of fuel and air in the tank.

The purpose of the baffle plate in a fuel tank is to. provide an expansion space for the fuel. resist fuel surging within the fuel tank. provide internal structural integrity.

Fuel baffles are installed in tanks to prevent ______________________ caused by changes in the attitude of the aircraft. vapors. surging. starvation.

One advantage of electrical and electronic fuel quantity indicating systems is that. the indicators are calibrated in gallons; therefore, no conversion is necessary. only one transmitter and one indicator are needed regardless of the number of tanks. several fuel tank levels can be read on one indicator.

The purpose of a diaphragm in a vane-type fuel pump is to. equalize fuel pressure at all speeds. vary fuel pressure according to throttle setting. compensate fuel pressures to altitude changes.

If it is necessary to enter an aircraft's fuel tank, which procedure should be avoided?. Continue purging the tank during the entire work period. Station an assistant outside the fuel tank access to perform rescue operations if required. Conduct the defueling and tank purging operation in an air-conditioned building.

Why are centrifugal-type boost pumps used in fuel systems of aircraft operating at high altitude?. Because they are positive displacement pumps. To supply fuel under pressure to engine-driven pumps. To permit cooling air to circulate around the motor.

What is the recommended practice for cleaning a fuel tank before welding?. Purge the tank with air. Flush the inside of the tank with clean water. Steam clean the tank interior.

When routing a fuel line between two rigidly mounted fittings the line should. have at least one bend between such fittings. be a straight length of tubing and clamped to the aircraft structure. have a flexible line added between two metal lines to allow for ease of installation.

Which gas is used for purging an aircraft fuel tank?. Helium or argon. Carbon dioxide. Carbon monoxide.

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. check. dump.

The electronic-type fuel quantity indicating system consists of a bridge circuit,. an amplifier, an indicator, and a tank unit. a tank, an amplifier, and an indicator. a tank unit, a tank, and an amplifier.

The location of leaks and defects within the internal portions of the fuel system can usually be determined by. visual inspection for evidence of wet spots and stains, and feeling for unusually warm components. performing a fuel flow check. observing the pressure gauge and operating the selector valves.

What must each fuel quantity indicator be calibrated to read during level flight when the quantity of fuel remaining is equal to the unusable fuel supply?. The total unusable fuel quantity. Both the total unusable fuel quantity and the unusable fuel quantity in each tank. Zero.

A digital fuel totalizer automatically indicates the amount of fuel used, fuel remaining, current rate of consumption, and fuel. weight aboard at takeoff. remaining at the 45-minute IFR fuel reserve. remaining, flight time at the current power setting.

What type of remote-reading fuel quantity indicating system has several probes installed in each fuel tank?. Electromechanical. Electronic. Direct reading.

Which aircraft fuel quantity indicating system incorporates a signal amplifier?. Electronic. Sight glass. Electrical.