CDL AIR BRAKES PRACTICE TEST - MASSACHUSETTS
16.
If the low air pressure warning light comes on, you should:
|
call for help.
|
|
|
continue to drive normally.
|
|
|
stop immediately.
|
|
|
set the parking brake.
|
17.
The emergency brake system:
|
uses the parking brake to stop the vehicle in the event of a brake system failure.
|
|
|
uses the service brake to stop the vehicle in the event of a parking brake system failure.
|
|
|
uses parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure.
|
|
|
None of the above.
|
18.
Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:
|
55 to 74 psi.
|
|
|
20 to 45 psi.
|
|
|
5 to 15 psi.
|
|
|
30 to 35 psi.
|
19.
To avoid becoming a distracted driver you should:
|
adjust all vehicle controls and mirrors while driving.
|
|
|
not engage in complex conversations with others.
|
|
|
eat and drink while you drive.
|
|
|
not turn off all communication devices.
|
20.
The s-cam:
|
forces the brake shoes away from one another and presses them against the inside of the brake drum.
|
|
|
helps ensure that air flows to all trailers.
|
|
|
pulls the brake shoes away from the drum.
|
|
|
All of the above.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More