AIR BRAKES PRACTICE TEST - LOUISIANA
6.
The service brake applies and releases:
|
the brake in an emergency situation.
|
|
|
the brake when you use the brake pedal during normal driving.
|
|
|
the parking brake when you use the parking brake control.
|
|
|
None of the above.
|
7.
Axle weight is:
|
the maximum safe weight your tires can carry at a specified pressure.
|
|
|
the value specified by the manufacturer as the loaded weight of one axle.
|
|
|
the weight transmitted to the ground by one axle or one set of axles.
|
|
|
the weight of all the axles added together.
|
8.
In vehicles with air brakes, the brake pedal:
|
tells you how much pressure is in
the air tanks.
|
|
|
pumps air into the air storage
tanks.
|
|
|
controls the air pressure applied to the brakes.
|
|
|
let the
air out of the spring brakes.
|
9.
To check that spring brakes come on automatically, the first thing to do is to:
|
turn off the engine, release the parking brake and time the air pressure drop.
|
|
|
continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
|
|
|
release the parking brake, move the vehicle forward slowly, and apply the brakes firmly.
|
|
|
All of the above.
|
10.
An alcohol evaporator:
|
protects the air brake system from too much pressure.
|
|
|
used to reduce the chance of the front wheels skidding.
|
|
|
is used to reduce the risk of ice in air brake valves and other parts during cold weather.
|
|
|
to hold compressed air.
|
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More