WISCONSIN CDL AIR BRAKES PRACTICE TEST
6.
The __________ keeps air from going out if the air compressor develops a leak.
|
tractor protection valve
|
|
|
one-way check valve
|
|
|
emergency relay valve
|
|
|
air compressor drive belt
|
7.
If air pressure does not build up fast enough:
|
you should put the parking brake on and gently pull against it in a low gear.
|
|
|
you may be forced to turn off the engine and release the parking brake.
|
|
|
the pressure may drop too low during driving.
|
|
|
you should turn the electrical power on and step on and off the brake pedal.
|
8.
When a tire fails, you must:
|
stay off the brake.
|
|
|
hold the steering wheel firmly.
|
|
|
get out and check all the tires after you have come to a stop.
|
|
|
All of the above.
|
9.
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.
|
|
|
cause the brakes to squeak.
|
10.
When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
|
When you are conducting your pre-trip inspection.
|
|
|
Only while you are taking a rest break.
|
|
|
When the tank pressure falls to the "cut-in" pressure.
|
|
|
Never.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More