CDL AIR BRAKES PRACTICE TEST - ARIZONA
11.
If your truck has automatic transmission, you should downshift:
|
when going down grades.
|
|
|
after entering a curve.
|
|
|
whenever road conditions allow.
|
12.
The one-way check valve:
|
keeps air from going out if the air compressor develops a leak.
|
|
|
keeps your wheels from locking up when you brake hard.
|
|
|
supplies air to the trailer air tanks.
|
13.
To check the slack adjusters:
|
park downhill and see if the vehicle rolls.
|
|
|
Park on level ground and chock the wheels, release the parking brakes and pull hard on each slack adjuster. The slack adjuster shouldn't move more than one inch.
|
|
|
check the air hoses connected to the brake chambers to make sure they aren't cut or worn.
|
14.
At passive railroad crossings, even if there are active railroad signals that indicate the tracks are clear, you must _________ to be sure it is safe to proceed.
|
listen, look and stop
|
|
|
go, stop and listen
|
|
|
stop, look, and listen
|
15.
In a dual-air system - with engine at operating RPM, the pressure should build from 85 to 100 psi within how many seconds?
|
45
|
|
|
20
|
|
|
12
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More