Braking System Review Flashcard

Front

Who is correct regarding the braking system: Technician A says that the braking system takes vehicle power stored as kinetic energy and converts it back into heat through friction. Technician B says that heat, friction's by-product, is dissipated into the air?

Back

Both Technician A and Technician B

Front

A consequence of what phenomenon is that the tires begin to skid, and the driver loses the ability to steer the vehicle?

Back

Wheel lockup

Front

While discussing advantages of air brake systems, Technician A says the supply of air is limitless, which allows for minor leaks without the loss of braking. Technician B says that connecting the tractor and trailer braking systems is easier using air lines rather than hydraulic hoses. Who is correct?

Back

Both Technician A and Technician B

Front

What are used to prevent a total loss of braking if a failure occurs? Options: Parking brakes, Separate circuits, Roto-chambers, Power springs

Back

Separate circuits

Front

Wedge brakes use __________ to multiply braking force.

Back

leverage

Front

Who is correct regarding brake block friction material identification: Technician A says all brake block friction material is identified by an edge code. Technician B says the friction class is indicated by four letters?

Back

Technician A only

Front

__________ produce more brake torque, but often result in uneven brake shoe wear.

Back

Drum brakes

Front

What occurs during chemical fade?

Back

Steam or gases from vaporized lining material form between the hot lining and drum.

Front

During brake fade, the brakes' stopping power is __________.

Back

Reduced

Front

Who is correct regarding the statements about brake maintenance and brake torque? Technician A says it is not necessary that friction material on all axles be replaced at the same time. Technician B says brake torque refers to the force applied to the foundation brakes during braking and is calculated by the vehicle manufacturer using several variables.

Back

Technician B only