WorksheetsTwo Stroke Engine Quiz
Total questions: 20
Worksheet time: 10mins
What is one advantage of a two stroke engine compared to a four stroke engine?
Longer lifespan
More efficient fuel consumption
Simpler construction
Quieter operation
Which component is not needed in a two stroke engine?
Piston
Camshaft
Connecting rod
Crankshaft
Why do two stroke engines have a great power to weight ratio?
They burn fuel more efficiently
They have fewer components
They use heavier oil
They have more valves
What is a disadvantage of a two stroke engine?
It is heavier than a four stroke engine
It produces less power per revolution
It consumes more fuel and oil
It requires more maintenance
How often does a two stroke engine ignite compared to a four stroke engine?
Every two revolutions
Every half revolution
Every revolution
Every four revolutions
Why must care be taken when mixing oil with fuel in a two stroke engine?
To avoid engine overheating
so that it is mixed to the proper ration
To reduce noise
To improve fuel efficiency
What happens during the compression stroke of a two stroke engine?
The piston is driven down
Exhaust gases escape
A vacuum is created in the crankcase
The intake port is uncovered
What occurs during the power stroke of a two stroke engine?
The piston compresses the fuel mixture
The spark plug fires
The reed valve opens
New fuel enters the cylinder
Why are two stroke engines considered multi-position motors?
They can operate in multiple orientations
They have multiple pistons
They use multiple types of fuel
They have multiple exhaust ports
Which of the following is a result of the two stroke engine’s poor lubrication?
Shorter engine life
Increased pollution
Improved efficiency
Reduced noise
What is created when the piston travels up during the compression stroke?
Pressure in the crankcase
Vacuum in the crankcase
Pressure in the cylinder
Vacuum in the cylinder
Why do two stroke engines produce more pollution?
They use less oil
They are quieter
They consume more fuel and oil
They have more efficient combustion
What happens when the piston reaches the bottom of its stroke?
The intake port is uncovered
The reed valve opens
The piston starts compressing fuel
The intake port closes
Why do two stroke engines consume more fuel than four stroke engines?
They have a lower compression ratio
They burn fuel less efficiently
They use heavier oil
They operate at lower temperatures
In two stroke engines, how is the crankcase used?
As a separate oil chamber
As a pressurization chamber
It uses heavy oil for lubrication
What must be mixed with gasoline in a two stroke engine?
Water
Diesel
Two cycle engine oil
Heavy oil
During which stroke is the reed valve closed in a two stroke engine?
Compression stroke
Power stroke
Intake stroke
Exhaust stroke
What is the main reason a two stroke engine is louder than a four stroke engine?
It has a higher compression ratio
It ignites every revolution
It uses a larger piston
It has a wider exhaust port
Why is the crankcase sealed in a two stroke engine?
To reduce noise
To prevent oil leakage
To allow multi-position operation
To increase fuel efficiency
What is a consequence of the overlapping operations in two stroke engines?
Increased complexity
Reduced parts
Decreased power
Increased weight
