NEW JERSEY CDL AIR BRAKES PRACTICE TEST
16.
Which of the following is NOT TRUE? When you drive a tractor-trailer combination with ABS, you should:
|
monitor your tractor and trailer as you slow down, and if it is safe to do so, back off the brakes to stay in control.
|
|
|
use only the braking force necessary to stop safely.
|
|
|
brake the same way, regardless of whether you have ABS on the tractor, the trailer, or both.
|
|
|
drive slower to keep your vehicle in a straight line.
|
17.
If the spring brakes do not release when you push the trailer air supply control, you should:
|
check the electrical cables.
|
|
|
pump the brakes.
|
|
|
rev or
lug the engine.
|
|
|
check the air line connections.
|
18.
The low pressure warning signal will generally activate when the air pressure falls between:
|
55–75 psi.
|
|
|
80–85 psi.
|
|
|
30–35 psi.
|
|
|
85–100 psi.
|
19.
Slack adjusters:
|
regulate the distance that the air brake has to travel to apply friction to the wheel.
|
|
|
are the linkage between the operating rod in the brake chamber and drum brakes or disk brakes in an air brake system.
|
|
|
are used to adjust the brakes on an air-brake system.
|
|
|
All of the above.
|
20.
The ABS malfunction lamp on the instrument panel is:
|
Orange
|
|
|
Blue
|
|
|
Red
|
|
|
Yellow
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More