MD CDL AIR BRAKES PRACTICE TEST
11.
ABS brakes help you:
|
lock up the wheels in an emergency stop.
|
|
|
downshift before starting down a hill.
|
|
|
find an escape route when the service brakes fail.
|
|
|
avoid wheel lock up.
|
12.
Air tanks must be drained because:
|
compressed air usually has some water in it. The water can freeze in cold
weather and cause brake failure.
|
|
|
if you don't drain the tanks yourself, your battery fluid may drain out.
|
|
|
if one air system is low on pressure, the rear brakes will not be operating fully.
|
|
|
when you push the brake pedal, air is let into each brake chamber.
|
13.
To make the brakes work, air brakes use:
|
compressed air.
|
|
|
carbon monoxide.
|
|
|
nitrogen.
|
|
|
hydraulic air.
|
14.
Most heavy vehicles require ________ change gears.
|
double clutching
|
|
|
single clutching
|
|
|
double shifting
|
|
|
triple shifting
|
15.
A driver distraction is anything that takes your attention away from driving, such as:
|
adjusting the radio.
|
|
|
pedestrians.
|
|
|
billboards.
|
|
|
All of the above.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More