CHASSIS SYSTEMS L3 - STEERING AND
BRAKES EXAM QUESTIONS AND
ANSWERS
Hall effect sensor - Answer-Active sensor used to measure wheel speed which gives a
digital waveform. Used in modern systems, it has 3 wires
Variable reluctance sensor - Answer-Passive sensor used to measure wheel speed
which gives an AC voltage/analogue waveform. Usually has 2 wires
Sensor ring - Answer-Toothed or slotted ring which interrupts magnetic field of a wheel
speed sensor to induce a voltage
Solenoid valve - Answer-Valve operated by electricity found inside the ABS modulator
Anti-lock Braking System - Answer-Electronic cadence braking which prevents skidding
allowing the driver to maintain vehicle control
Electronic stability program - Answer-Sophisticated system which uses the ABS, EPS
and TC to maintain correct vehicle attitude on the road
Electric park brake - Answer-Uses a system of motors and cables to replace manual
park brake operation
Emergency brake assist - Answer-System which overrides driver input to bring vehicle
to rest when an emergency brake application is made
Active Yaw Control - Answer-System which uses an active differential to send torque to
the wheels that have the most grip on the road
ABS - Answer-Acronym for Anti-lock Braking System
EPS - Answer-Acronym for Electric Power Steering
ESP - Answer-Acronym for Electronic Stability Program
AYC - Answer-Acronym for Active Yaw Control
EPB - Answer-Acronym for Electric Park Brake
EBA - Answer-Acronym for Emergency Brake Assist
BRAKES EXAM QUESTIONS AND
ANSWERS
Hall effect sensor - Answer-Active sensor used to measure wheel speed which gives a
digital waveform. Used in modern systems, it has 3 wires
Variable reluctance sensor - Answer-Passive sensor used to measure wheel speed
which gives an AC voltage/analogue waveform. Usually has 2 wires
Sensor ring - Answer-Toothed or slotted ring which interrupts magnetic field of a wheel
speed sensor to induce a voltage
Solenoid valve - Answer-Valve operated by electricity found inside the ABS modulator
Anti-lock Braking System - Answer-Electronic cadence braking which prevents skidding
allowing the driver to maintain vehicle control
Electronic stability program - Answer-Sophisticated system which uses the ABS, EPS
and TC to maintain correct vehicle attitude on the road
Electric park brake - Answer-Uses a system of motors and cables to replace manual
park brake operation
Emergency brake assist - Answer-System which overrides driver input to bring vehicle
to rest when an emergency brake application is made
Active Yaw Control - Answer-System which uses an active differential to send torque to
the wheels that have the most grip on the road
ABS - Answer-Acronym for Anti-lock Braking System
EPS - Answer-Acronym for Electric Power Steering
ESP - Answer-Acronym for Electronic Stability Program
AYC - Answer-Acronym for Active Yaw Control
EPB - Answer-Acronym for Electric Park Brake
EBA - Answer-Acronym for Emergency Brake Assist
