AUT-105 Brakes, Chapter 43

Technician A says that in a traction control system, the control unit can independently apply individual brake units even though the driver is not stepping on the brake pedal. Technician B says that a vehicle equipped with ABS can automatically reduce engine torque if the wheels are skidding. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

_______ gives greater control of the braking system to the computer, which can react more quickly and more deliberately than a driver, especially in a panic situation

• Disc brake

• Band brake

• Scrub brake

• Brake assist

Scrub brakes are an example of a simple _________ system.

• Pneumatic

• Hydraulic

• Mechanical

• Electrical

Identify the brake system that uses a metal band lined with friction material.

• Scrub brake

• Band brake

• Hydraulic brake

• Drum brake

Tech A states that the band brake system worked well in the reverse direction. Tech B states that the band would try to unwind in the forward direction. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A states that too much brake force can cause the tire to lose traction and skid. Tech B states that ABS systems have helped to reduce the number of vehicle accidents each year. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that the brake pedal uses leverage to multiply foot pressure. Tech B says that when braking hard while moving forward, the vehicle's weight transfers to the rear wheels, increasing their traction. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A says that light-duty service brakes are typically applied hydraulically. Tech B says that light-duty parking brakes are typically applied hydraulically. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A nor B

Tech A states that designers can vary the size of hydraulic cylinders to increase or decrease the force applied by a brake. Tech B states that the hydraulic cylinders of a brake system must always be of the same size. Who is correct?

• Tech A

• Tech B

• Both A and B

• Neither A noe B

If we triple the speed of an object, the kinetic energy will:

• increase by three times

• increase by nine times

• decrease by three times

• increase by six times