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WorksheetsAir and Fuel Delivery Systems level 1 formative assessment
Total questions: 20
Worksheet time: 10mins
What is the main purpose of an air and fuel delivery system?
To cool the engine
To mix air and fuel for combustion
To lubricate engine parts
To charge the battery
Which type of engine uses a spark plug?
Diesel engine
Petrol engine
Steam engine
Electric motor
What does a carburettor do?
Filters oil
Mixes air and fuel
Controls exhaust gases
Cools the engine
Where is the carburettor usually fitted?
In the exhaust system
On the fuel tank
On the intake system
Inside the cylinder
What causes fuel to flow through a carburettor?
Gravity only
Air pressure difference
Electrical current
Engine oil pressure
Which part controls engine speed in a carburettor?
Float
Throttle valve
Fuel filter
Spark plug
What is the main disadvantage of a carburettor?
It is too simple
Poor fuel control compared to injection
It uses electricity
It cannot mix air and fuel
What does SPI stand for?
Spark Petrol Ignition
Single Point Injection
Standard Pressure Intake
Simple Petrol Injector
How many injectors does a single-point injection system usually have?
One
Two
Four
One per cylinder
Where is the injector located in an SPI system?
Inside each cylinder
In the exhaust manifold
In the throttle body
On the fuel tank
What controls fuel delivery in a fuel injection system?
Carburettor jets
Engine Control Unit (ECU)
Throttle cable only
Vacuum pressure only
What does an ECU do?
Stores fuel
Controls engine cooling
Controls fuel and air delivery
Produces spark
What does MPI stand for?
Main Petrol Injection
Multi Point Injection
Mechanical Petrol Intake
Mixed Pressure Injection
How many injectors are used in a multi-point injection system?
One
Two
One per cylinder
One per spark plug
Where are MPI injectors usually fitted?
In the exhaust
In the intake manifold near each cylinder
In the fuel tank
In the air filter
What is an advantage of fuel injection over carburettors?
Uses more fuel
Better fuel control and efficiency
More moving parts
Harder to start
Which system gives the most accurate fuel delivery?
Carburettor
Single-point injection
Multi-point injection
Gravity feed system
Which component measures the amount of air entering the engine?
Fuel pump
Air filter
Airflow or MAP sensor
Spark plug
Why is the air filter important?
It cools the fuel
It cleans the air before entering the engine
It increases fuel pressure
It controls engine speed
Which system is most commonly used on modern petrol engines?
Carburettor
Single-point injection
Multi-point injection
Mechanical fuel pump
