LV08 Braking System Quiz

Which component is not typically part of a modern braking system?

• Brake pedal

• Brake servo

• ECU and modulator unit

• Brake calipers

What are the two main types of wheel speed sensors?

• Inductive and Capacitive

• Inductive and Hall effect

• Hall effect and Optical

• Optical and Capacitive

What is the first stage of ABS operation when rapid deceleration is detected?

• ABS pressure holding phase

• ABS pressure reduction phase

• ABS pressure increase phase

• ABS pressure modulation phase

What does the ABS ECU use to regulate the current flowing to the solenoid valve?

• Pulse width modulation (PWM)

• Frequency modulation (FM)

• Amplitude modulation (AM)

• Phase modulation (PM)

What happens when the wheel speed sensor indicates that the wheel is slowing too rapidly?

• The ECU deactivates the solenoid valve.

• The ECU fully energises the solenoid valve.

• The brake master cylinder pressure increases.

• The modulator unit stops functioning.

What is the purpose of brake force proportioning?

• To increase the grip on all wheels equally.

• To reduce the grip on the loaded wheel.

• To prevent skidding by adjusting grip on the unloaded wheel.

• To enhance acceleration during braking.

How does Electronic Brake Force Distribution (EBD) function?

• It directs hydraulic fluid pressure to all wheels equally.

• It directs hydraulic fluid pressure to the wheels with the least grip.

• It directs hydraulic fluid pressure to the wheels with the most grip.

• It reduces hydraulic fluid pressure to all wheels.

What is the role of a solenoid in an emergency brake assistance system?

• It decreases pressure in the hydraulics.

• It increases pressure in the hydraulics.

• It maintains constant pressure in the hydraulics.

• It releases pressure from the hydraulics.

What is a characteristic of a cable actuated electronic parking brake system?

• It uses a hydraulic system to hold the brakes.

• It uses a motor to draw on a cable operated handbrake.

• It uses a mechanical actuator in the brake caliper.

• It uses a pneumatic system to hold the brakes.

What is the function of Electronic Stability Control (ESC) systems?

• To increase vehicle speed during cornering.

• To maintain the attitude of the vehicle suspension during manoeuvring.

• To decrease vehicle speed during straight driving.

• To enhance fuel efficiency during driving.