Fuel Systems Quiz

1. Air moves from an area of _______ concentration to an area of _______ concentration when entering the carburetor.

• A.) High, High

• B.) High, Low

• C.) Low, High

• D.) Low, Low

2. Which of the following accurately describes the venturi effect?

• A.) The reduction in pressure resulting in fluid being forced through a constricted passage 

• B.) When the fuel is allowed to enter the engine at wide open throttle

• C.) When the fuel is prevented from flowing through the carburetor  

• D.) The increase in ambient temperature resulting in loss of control

3. The part of the carburetor that allows an engine to run at an idle when the throttle plate is nearly closed and mixes air and fuel on the engine side is called the:

• A.) Choke Plate

• B.) Governor

• C.) Idle Circuit

• D.) Venturi 

4. The Governor of an engine performs a function similar to __________.

• A.) Doing Burn-Outs

• B.) Cruise Control 

• C.) Revving an Engine

• D.) Spinning Tires in Snow

5. What is the main purpose of the governor on a small engine?

• A.) Control/maintain the speed of the engine

• B.) Mix air and fuel

• C.) Ignites the spark

• D.) Turns electrical energy into mechanical energy

6. Which of these is not a governor spring variable?

• A.) Color of Spring Wire 

• B.) Free Length

• C.) Gauge of Wire  

• D.) Number of Turns 

A.) Allows equalization of pressure between chamber and fuel bowl

• Choke

• Air Bleed

• Throttle

• Governor

• Venturi

B.) Regulates the amount of fuel that enters the carburetor

• Choke

• Air Bleed

• Throttle

• Governor

• Venturi

C.) Keeps the engine working at a consistent speed

• Choke

• Air Bleed

• Throttle

• Governor

• Venturi

D.) Regulates the amount of air that enters the carburetor

• Choke

• Air Bleed

• Throttle

• Governor

• Venturi