TDC - Theoretical Driving Course Exam Theoretical Driving Course Vehicle Parts and Functions 1

Question 1

What is the primary function of the vehicle's alternator?

Accepted Answer

To generate electrical current and recharge the battery while the engine runs

Answer

To start the engine by providing an initial burst of power

Answer

To regulate fuel flow to the engine

Answer

To cool the engine by circulating coolant

Question 2

What is the role of the vehicle's radiator?

Accepted Answer

To dissipate heat from the engine coolant and prevent overheating

Answer

To filter exhaust gases before they leave the tailpipe

Answer

To store extra fuel for long trips

Answer

To increase engine compression for better performance

Question 3

What does the vehicle's timing belt or timing chain do?

Accepted Answer

It synchronises the rotation of the crankshaft and camshaft so valves open and close at the correct moment

Answer

It connects the engine to the gearbox to transfer torque

Answer

It controls the tension on the drive wheels to prevent wheel spin

Answer

It links the steering wheel to the front wheels

Question 4

What is the function of the vehicle's catalytic converter?

Accepted Answer

To convert harmful exhaust pollutants into less harmful gases before they exit the tailpipe

Answer

To increase fuel efficiency by pre-heating the air-fuel mixture

Answer

To amplify engine power by compressing exhaust gases

Answer

To filter particles from the engine oil

Question 5

What is the purpose of the vehicle's master cylinder in the braking system?

Accepted Answer

To convert the mechanical force from the brake pedal into hydraulic pressure that activates the brakes

Answer

To store brake fluid and act as a reservoir only

Answer

To automatically adjust brake pad thickness as they wear

Answer

To cool the brake discs during heavy braking

Question 6

What is the function of the vehicle's fuel injector?

Accepted Answer

To spray a precise, atomised amount of fuel directly into the engine's intake manifold or combustion chamber

Answer

To ignite the air-fuel mixture inside the combustion chamber

Answer

To pump fuel from the tank to the engine at high pressure

Answer

To filter contaminants out of the fuel before it reaches the engine