A&P Aircraft Fuel Systems 2

Question 1

Which type of fuel metering system is most susceptible to carburetor ice formation?

Accepted Answer

Float-type carburetor

Answer

Pressure-type carburetor

Answer

Continuous-flow fuel injection

Answer

Direct cylinder fuel injection

Question 2

What is the primary purpose of a crossfeed fuel system in a multi-engine aircraft?

Accepted Answer

To allow any engine to draw fuel from any tank on the aircraft

Answer

To transfer fuel between tanks for lateral balance only

Answer

To provide an alternate fuel path in case the main pump fails

Answer

To preheat fuel before it enters the turbine engine

Question 3

How does a fuel injection system differ from a float-type carburetor in delivering fuel?

Accepted Answer

Fuel injection meters and delivers fuel under pressure directly to the intake ports or cylinders

Answer

Fuel injection uses a float chamber to control fuel level before the venturi

Answer

Fuel injection requires a larger air filter and intake manifold

Answer

Fuel injection is only certified for use on turbine engines

Question 4

What color is 80/87 aviation gasoline?

Accepted Answer

Red

Answer

Blue

Answer

Green

Answer

Orange

Question 5

What is the function of the fuel selector valve in an aircraft fuel system?

Accepted Answer

To select which fuel tank supplies fuel to the engine

Answer

To regulate fuel pressure delivered to the engine

Answer

To control the fuel-to-air mixture ratio

Answer

To bypass the engine-driven pump during engine start

Question 6

Which type of fuel is used in turbine (jet) engines?

Accepted Answer

Jet-A or Jet-A1 kerosene-based fuel

Answer

100LL aviation gasoline

Answer

80/87 aviation gasoline

Answer

High-sulfur diesel fuel

Question 7

What does a fuel quantity transmitter (sender unit) do in an aircraft fuel system?

Accepted Answer

It converts the fuel level in the tank to an electrical signal that drives the cockpit fuel quantity gauge

Answer

It transmits fuel pressure readings to the cockpit indicator

Answer

It transmits fuel temperature data to the engine control unit

Answer

It controls the fuel flow rate from the tank to the boost pump