CDL Air Brake Practice Test (Latest
Update) Questions and Verified Answers | 100%
Correct | Grade A+.
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Terms in this set (32)
The parking or emergency brake on b. Spring pressure
a heavy vehicle can only be held in
position by something that cannot
leak away, like:
a. Fluid pressure
b. Spring pressure
c. Air pressure
d. Any of the above
A straight truck or bus air brake c. 3
system should not leak at a rate of
more than __ psi per minute with the
engine off and the brake released.
a. 1
b. 2
c. 3
d. 4
, Your vehicle has dual air brake a. Bring the vehicle to a safe stop and continue
system. If low air pressure warning only when the system is fixed.
comes on for the secondary system
or for one system, you should:
a. Bring the vehicle to a safe stop
and continue only when the system
is fixed.
b. Reduce your speed, and test the
remaining system while under-way.
c. Reduce your speed, and drive to
the nearest garage for repairs.
d. Continue at normal speed if only
the secondary system fails.
If your vehicle has an alcohol d. Reduce the risk of ice in the air brake valves in
evaporator, it is there to: cold weather.
a. Rid the wet tank of alcohol that
condenses and sits at the bottom.
b. Eliminate the need for daily tank
draining.
c. Boost tank pressure the same
way that superchargers boost
engines.
d. Reduce the risk of ice in the air
brake valves in cold weather.
Update) Questions and Verified Answers | 100%
Correct | Grade A+.
Save
Terms in this set (32)
The parking or emergency brake on b. Spring pressure
a heavy vehicle can only be held in
position by something that cannot
leak away, like:
a. Fluid pressure
b. Spring pressure
c. Air pressure
d. Any of the above
A straight truck or bus air brake c. 3
system should not leak at a rate of
more than __ psi per minute with the
engine off and the brake released.
a. 1
b. 2
c. 3
d. 4
, Your vehicle has dual air brake a. Bring the vehicle to a safe stop and continue
system. If low air pressure warning only when the system is fixed.
comes on for the secondary system
or for one system, you should:
a. Bring the vehicle to a safe stop
and continue only when the system
is fixed.
b. Reduce your speed, and test the
remaining system while under-way.
c. Reduce your speed, and drive to
the nearest garage for repairs.
d. Continue at normal speed if only
the secondary system fails.
If your vehicle has an alcohol d. Reduce the risk of ice in the air brake valves in
evaporator, it is there to: cold weather.
a. Rid the wet tank of alcohol that
condenses and sits at the bottom.
b. Eliminate the need for daily tank
draining.
c. Boost tank pressure the same
way that superchargers boost
engines.
d. Reduce the risk of ice in the air
brake valves in cold weather.
