WASHINGTON CDL AIR BRAKES PRACTICE TEST
21.
Your truck has a dual air system. If either system is very low on pressure:
|
the tractor protection valve will not work properly.
|
|
|
the low pressure warning signal will stop working.
|
|
|
either the front or the rear brake will not be fully operational.
|
22.
You supply air to the trailer brake system by:
|
pushing in the trailer air supply knob.
|
|
|
connecting the tractor service air line to the trailer service glad hand.
|
|
|
plugging the electrical cord into the trailer.
|
23.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
|
less; more
|
|
|
greater; less
|
|
|
greater; more
|
24.
If your vehicle has an alcohol evaporator, every day during cold weather, you should:
|
fill it up with oil to prevent alcohol from freezing.
|
|
|
check the alcohol container and fill up as necessary.
|
|
|
fill it up with oil to prevent the pipes from freezing.
|
25.
If you get stuck on railroad tracks, you should:
|
stay in the vehicle and call for help.
|
|
|
get out of the vehicle and away from the tracks.
|
|
|
have a helper push your vehicle.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More