Small Engine Unit Test

In which engine stroke is the air-fuel mixture pulled into the chamber?

• Intake Stroke

• Compression Stroke

• Power Stroke

• Exhaust Stroke

In which engine stroke does the “spent” air-fuel mixture get expelled from the chamber?

• Intake Stroke

• Compression Stroke

• Power Stroke

• Exhaust Stroke

In which engine stroke is the air-fuel mixture condensed in the chamber?

• Intake Stroke

• Compression Stroke

• Power Stroke

• Exhaust Stroke

In a small gas engine, the air-fuel mixture is brought into the piston chamber from which structure of the engine?

• Fuel Tank

• Transmission

• Carburetor

• All of the Above

The time in which both the intake and exhaust valves are open at the same time and fuel is wasted is referred to as:

• Emissions Compliance

• Efficiency Testing

• Valve Overlap

• Fuel Efficiency

Air moves from an area of _______ concentration to an area of _______ concentration?

• High, High

• Low, High

• High, Low

• Low, Low

Air differential is created to pull air out of the carburetor when:

• The piston moves from Top Dead Center to Bottom Dead Center

• The piston moves from Bottom Dead Center to Top Dead Center

• When the exhaust valve opens and the spent air/fuel mixture leaves

• All of the above

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:

• Choke Plate

• Venturi

• Governor

• Idle Circuit

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

• Revving an Engine

• Cruise Control

• Doing Burn Outs

• Spinning Tires in Snow

Which of these is not a governor spring variable?

• Gauge of Wire

• Color of Spring Wire

• Free Length

• Number of Turns