Air Brake Manual Chapter 3
Mastering Air Brake Systems
Test your knowledge of air brake systems with our comprehensive quiz! Designed for those interested in understanding the crucial components and fun
- Learn about essential air brake components
- Understand how air compressors work
- Explore braking mechanisms and maintenance!
Which is not one of the five main components of an elementary air brake system?
Compressor
Reservoirs
Brake Shoes and Drums
Crankshaft
What is the function of the air compressor?
To hold a supply of compressed air until required for braking
To build up and maintain air pressure
To convert air pressure energy into mechanical force and movement
To generate heat through friction
Reservoirs are pressure-rated tanks, which hold a supply of compressed air until required for braking.
True
False
What controls and limits the flow of air into a compressor?
Exhaust Valve
Crankshaft
Governor
Reservoir Drain
What is the psi range at which the compressor is cut-out of its pumping stage?
100 to 200 psi
90 to 100 psi
120 psi to 145 psi
150 to 160 psi
The minimum psi at which the compressor is put back into the pumping stage is 85 psi.
True
False
What happens to compressed air when the compressor is in the unloaded stage?
It is passed back and forth between the two cylinders without supplying the reservoirs
It is passed back and forth between the two cylinders and then supplied to the reservoirs
It is let out of the compressor through the drain valve
It is supplied to the resevoirs
Why must reservoirs store a sufficient volume of air?
To allow for several brake applications
To allow for braking if the engine stops
To allow for braking if the compressor fails
All answers are correct
How often should the draincock be opened to drain the reservoirs of moisture?
After each use of the vehicle
Once per day when the vehicle is in use
As directed in the truck manual
All answers are correct
What is the function of the service-break chambers?
Convert compressed air pressure energy into mechanical force and movement
Hold a supply of compressed air until required for braking
Build up and maintain air pressure required to operate air brakes
Rotate the S-cam
Where do front brake assemblies have the brake chamber and slack adjuster mounted?
On the backing plate
On the front axle
Under the hood of the truck
Midway between the front and back axels
Brake shoes generate heat through friction with the brake drum surface.
True
False
What is the S-cam?
A tank that normally supplies air to the brakes on the steering axle
Device used to keep the brakes in proper adjustment
A valve which exhausts air quickly to reduce release time
A rotating device which activates the brake shoes
What is the difference between modern disc brakes and most drum brake designs?
Most brake drum designs have an internal, automatic system but disc brakes have a separate slack adjuster
Disc brake designs have an internal, automatic adjusting system but most brake drums have a separate slack adjuster
Disc brakes operate more quickly and efficiently than most drum brakes
Most drum brakes operate more quickly and efficiently than disc brakes
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