AMT Aircraft Fuel Systems

Question 1

What type of fuel is used in most turbine-powered aircraft?

Accepted Answer

Jet-A

Answer

AVGAS 100LL

Answer

AVGAS 80

Answer

Jet-B

Question 2

What is the primary purpose of an electric fuel boost pump in aircraft fuel systems?

Accepted Answer

To provide positive fuel pressure during start and prevent vapor lock at altitude

Answer

To filter contaminants before fuel reaches the engine

Answer

To regulate fuel temperature in high-altitude cruise

Answer

To measure and indicate fuel quantity to the cockpit

Question 3

What is the most common material used in the construction of aircraft integral fuel tanks?

Accepted Answer

Aluminum alloy

Answer

Stainless steel

Answer

Titanium

Answer

Fiberglass-reinforced composite

Question 4

What is the function of a fuel primer in a reciprocating aircraft engine?

Accepted Answer

To inject raw fuel directly into the engine cylinders or intake to aid cold starts

Answer

To purge residual water from the fuel lines before start

Answer

To pressurize the fuel tanks prior to engine start

Answer

To test fuel quality and detect contamination

Question 5

What does a fuel flow indicator measure on a turbine-powered aircraft?

Accepted Answer

Rate of fuel consumption, typically in pounds per hour

Answer

Fuel temperature at the engine inlet

Answer

Remaining fuel quantity across all tanks

Answer

Fuel pressure differential across the main filter

Question 6

What is the minimum acceptable fuel grade for a piston engine certificated for 100 octane aviation gasoline?

Accepted Answer

100LL or 100/130 aviation gasoline

Answer

80 octane AVGAS

Answer

91/96 octane AVGAS

Answer

115/145 aviation gasoline only

Question 7

What is the primary purpose of fuel tank vents on aircraft?

Accepted Answer

To allow air to enter as fuel is consumed, preventing vacuum formation that restricts flow

Answer

To release excess fuel overflow during ground refueling operations

Answer

To prevent moisture from entering the fuel tank from outside

Answer

To equalize pressure between multiple fuel tanks during crossfeed