AIR BRAKES PRACTICE TEST - WASHINGTON
11.
Air pressure should build up in a single air system, within about:
|
3 minutes.
|
|
|
10 minutes.
|
|
|
15 minutes.
|
12.
If your trailer starts to skid, you should:
|
use the trailer hand brake (if you have one) to straighten out the rig.
|
|
|
release the brakes to get traction back.
|
|
|
keep the rear of your vehicle close to the curb.
|
13.
In a dual air brake system, if one air system is very low on pressure:
|
you should drive and brake as you always have.
|
|
|
either the front or rear brakes will not be operating fully.
|
|
|
you should pump the brakes to restore pressure.
|
14.
Which of the following can cause brakes to fade or fail?
|
Excessive use of the service brakes
|
|
|
Brakes out of adjustment
|
|
|
All of the above.
|
15.
Air brakes use ________ to make the brakes work.
|
compressed gases
|
|
|
compressed gas cylinders
|
|
|
compressed air
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More