Brakes Pre Exam

A moving vehicle has a tremendous amount of

• Tailwind

• Wheel Speed

• Kinetic Energy

• Braking Power

the kinetic energy used must be converted into heat energy through the braking system in order to ​ (a)  

• Stop a vehicle
• Slow the vehicle down
• Create more speed
• Burn rubber

​ (a)   and​ (b)   have different effects on braking requirements;

• Weight
• Speed
• Axles
• Wheel Size
• Drum Size
• Applied Force

To operate, brakes must turn kinetic energy into heat, but they must also be capable of

• Dissipating heat

• Creating Air Flow

• Applying Pressure

• Stopping on a dime

Brakes must be designed to be able to handle ​ (a)  

• Inertia Shift
• Stability Control
• Jack Knife Prevention
• Center of Gravity Shift

·         All brake systems use some force to multiply the braking effort applied to the brake pedal by the driver. This force can be (a)   ,​ (b)   pressure, or a ​ (c)   of the two.

• compressed air
• hydraulic
• combination
• transmission
• liquid
• mix

Compressed air is the primary method of choice to multiply brake force for

• Commercial vehicles

• Personal vehicles

• Leased vehicles

• Highway Trucks

• A and D

systems are very versatile and can be easily connected to trailers, plus there is no worry of leaks or spills, as in hydraulic systems.

• Engine Brake

• Hydraulic

• Multiple

• Air Brake

Air brake systems can handle small system leaks without adverse effects.

• True

• False

All brake systems are single chamber systems, meaning that if one system fails the other can still stop the vehicle

• True

• False