ENGINE FUEL SYSTEM

During what period does the fuel pump bypass valve open and remain open?

• a. When the fuel pump pressure is greater than the demand of the engine

• b. When the boost pump pressure is greater than fuel pump pressure

• c. When the fuel pump output is greater than the demand of the carburetor

If an engine equipped with a float-type carburetor backfires or misses when the throttle is advanced, a likely cause is that the

• a. Float level is too high

• b. Main air bleed is clogged

• c. Accelerating pump is not operating properly

A rotary-vane pump is best described as a

• a. Positive-displacement pump

• b. Variable-displacement pump

• c. Boost pump

Fuel boost pumps are operated

• a. To provide a positive flow of fuel to the engine

• b. During takeoff only

• c. Primarily for fuel transfer to another tank

A fuel strainer or filer must be located between the

• a. Boost pump and tank outlet

• b. Tank outlet and the fuel metering device

• c. Boost pump and engine-driven fuel pump

Where physical separation of the lines from electrical wiring or conduit is impracticable, locate

the fuel line

• a. Below the wiring and clamp the line securely to the airframe structure

• b. Above the wiring and clamp the line securely though the airframe structure

• c. Inboard of the wiring and clamp both securely to the airframe structure

Excessively rich or lean idle mixtures result in

• a. Too rapid completion of combustion

• b. Incomplete combustion

• c. Incomplete cylinder scavenging

Which type of pump is commonly used as a fuel pump on reciprocating engines?

• a. Gear

• b. Impeller

• c. Vane

Which statement is true regarding proper throttle rigging of an airplane?

• a. The throttle stop on the carburetor must be contacted before the stop of the cockpit

• b. The stop in the cockpit must be contacted before the stop on the carburetor

• c. The throttle control is properly adjusted when neither stop makes

What is the final authority for the details of carburetor overhaul?

• a. The local FAA safety inspector

• b. The Type Certificate Data Sheets for the engine

• c. The manufacturer's recommendations