Day 4-5 Progress Check

Question 1

When should a rich mixture be used for air-fuel mixtures in reciprocating engines?

Answer 1

During takeoff and climb

Question 2

What has been a significant shift in electronic engine controls in fuel systems?

Answer 2

From analog to digital controls

Question 3

Which type of engine fuel systems are commonly found in small, single-engine aircraft?

Answer 3

Simple Systems

Question 4

Which type of fuel is suitable for lower-compression engines and has a lower lead content?

Answer 4

80 Octane (Red)

Question 5

What is the role of the economizer system in a carburetor?

Answer 5

To enrich the mixture for cooling during high power conditions

Question 6

What principle does the main metering system in a carburetor operate on?

Answer 6

Venturi principle

Question 7

What is the purpose of selector valves in a basic fuel system?

Answer 7

To enable selection of fuel from different tanks

Question 8

Which of the following is not a cause of vapor lock?

Answer 8

High octane fuel used in low powered engine.

Question 9

Which type of carburetor is less affected by aircraft maneuvers and atmospheric pressure changes?

Answer 9

Pressure-type carburetor

Question 10

What is the core functionality of an engine fuel system?

Answer 10

To deliver fuel at appropriate pressure and flow rate to the engine’s metering device