CALIFORNIA CDL AIR BRAKES PRACTICE TEST
6.
Excessive use of the service brakes results in overheating. Too much heat can:
|
cause the brakes to grab.
|
|
|
cause the brakes apply unevenly.
|
|
|
make the brakes stop working.
|
7.
The braking power of the spring brakes:
|
is not affected by the air pressure level.
|
|
|
is not affected by the condition of the service brakes.
|
|
|
depends on the brakes being in adjustment.
|
8.
The one-way check valve:
|
supplies air to the trailer air tanks.
|
|
|
keeps your wheels from locking up when you brake hard.
|
|
|
keeps air from going out if the air compressor develops a leak.
|
9.
How do you check that spring brakes come on automatically?
|
On a tractor-trailer combination vehicle, continue to step on and off the brake pedal until the tractor protection valve and the parking brake valve close.
|
|
|
Continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
|
|
|
All of the above.
|
10.
_________ must have a low air pressure warning signal.
|
All vehicles with air brakes
|
|
|
Vehicles with air brakes built after 2010
|
|
|
Vehicles with air brakes built after 2005
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More