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WorksheetsAg Power Quiz #5
Total questions: 50
Worksheet time: 25mins
What is this part
Carburetor
Ignition coil
Fuel pump
Oil pump
In a 4 stroke engine, during the compression stroke the piston moves________
Which of the following is a function of a small engine?
To change heat energy into mechanical energy
To change kinetic energy into potential energy
To change rotary motion into vertical motion
To change reciprocal motion into circular motion
What are the purpose of the cam lobes?
to prevent oil in the cylinder
to move the valves open and closed
decroative
to seal the air-fuel mixture during compression
What are these
Valves
Fuel regulator
Carburetor
Rockers
What danger does running an engine inside the shop present that requires students to open a window?
Carbon monoxide poisoning
bruising from a falling engine
a gas explosion
slipping on an oil spill
Which engine type requires oil to be mixed into gas
Single cylinder
Two stroke engines
Four Stroke Engines
Auto engines
Why does the flywheel have to be so heavy?
It helps provide inertia to keep the engine going
engines are sold by the pound
it helps slow the engine to a stop
magnets are heavy and the flywheel has 1 or more
1 Horsepower is equal to?
100 Ft-lbs/sec
550 Ft-lbs/sec
1000 Ft-lbs/sec
1 Ft-lbs/sec
How much horsepower does an engine have that moves 1100 lbs, 100 ft in 10 sec.?
1 HP
2 HP
10 HP
20 HP
Convert 0 °C to Fahrenheit?
-10°F
15°F
32°F
90°F
Why doesn’t a two-stroke engine require oil rings or an oil reservoir?
It's lubrication is supplied by mixing oil in the gasoline.
It doesn't need any lubrication
Because there is no spark plug
There is no combustion
What is the purpose of the head gasket?
It's filler material between cylinder block and cylinder head
It seals the combustion chamber
It's paper/plastic like material
All the above
What % of energy released from a small engine is converted to work?
10%
30%
50%
90%
What is the Primary difference between a diesel engine and a gasoline engine?
Oil Rings
There are only 2 stokes in a diesel engine as compared to 4 strokes in a gasoline engine
How fuel is ignited.
All the Above
In a 4 stroke engine, during the power stroke the piston moves________
Three methods of heat transfer are
conduction, potential, radiation
potential, kinetic, convection
conduction, kinetic, convection
conduction, convection, radiation
What is the purpose of the compression ring?
provide a seal between the piston and crankshaft
provide a seal between the piston and the cylinder
provide a seal between the cylinder and the crankshaft
provides a seal between crankshaft and crankcase
What allows gas to come into the throat of the carburetor from the fuel bowl?
Bernoulli's Principle
the Ripa effect
Induction Theory
Four-Stroke Theory
What is torque?
a rotating force
Pressure per square in
rotations per minute
a pulling force
What does the governor control?
the rpms of an engine (tries to make them constant)
the choke (controls the air going into the carburetor)
The electrical current going to the spark plug
the amount of oil in the crankcase
There are __________________ rings on a small engine piston.
one
two
three
four
A lawn mower typically will have a __________________ crankshaft.
vertical
diagonal
horizontal
flat
If 1 HP equals 550 lb-ft/sec. what will 2 HP equal in 5 Minutes?
550 x 2 x 5 =
5500 lb-ft/sec
550/2 x 5 =
55 lb-ft/sec
2(550 x 300) =
330000 lb-ft/sec
(550/2) x 300 =
82500 lb-ft/sec
What is the name type of the top ring on a Piston?
Wiper ring
Compression ring
Oil ring
Combustion ring
What is the name type of the bottom ring on a Piston?
Wiper ring
Compression ring
Oil ring
Combustion ring
What does the idle spring do?
Keeps tension on the governor to maintain a consistent rpms at idle
nothing, its idle after all
Increases the gas when the engine is under heavy load
Decreases the gas when the engine is under heavy load
What is the most common type of governor system?
Electrical
Mechanical
Vacuum
Spring loaded
What is this part
Governor and oil slinger
Oil slinger
governor
came shaft
An action in which a force applied to an object and causes a displacement of the object
Power
Work
Force
All of the Above
______ is the international unit of frequency equal to one cycle per second.
Milliamp
Micron
Hertz
Henry
The connecting rod connects what two engine parts together?
Piston and Camshaft
Piston and Crankcase
Piston and Flywheel
Piston and Crankshaft
What are the egg-shaped pieces on the camshaft called?
Cam Lobs
Cam Valves
Cam retainers
Cam tappets
During which stroke does the spark plug fire and cause combustion in the cylinder?
Intake
Compression
Power
Exhaust
What theory does the ignition armature rely on to work?
Induction Theory
Bernoulli's Principle
the Venturi Effect
Four Stroke Theory
What are the two systems for cooling an engine?
Liquid and air cooling systems
jet propulsion and injection systems
oil and vinegar cooling systems
chemical and physical systems
If your engine is running rich, this means?
There is more air than gas in the air/fuel mixture
There is more gas in the air in the air/fuel mixture
That the choke is closed
That the smoke coming from the engine is white
The governor connecting rod and spring connected to what?
the throttle plate
the choke plate
the ignition amature
the oil slinger
What role does the flywheel play in the ignition system?
Provides the magnet to complete the induction theory cycle
provides the electrical current to complete the induction theory cycle
the electrical conductor to complete the induction theory cycle
it doesn't
Reducing wear between moving parts is a function of the ____________________________.
fuel system
starting system
cooling system
lubrication system
The typical cooling system on a small engine uses _____________ to transfer heat.
fins
channels
fans
vacuum
