6/6/25, 1:33 PM NC CDL Combination Vehicles 2025 COMPREHENSIVE EXAM QUESTIONS |FREQUENTLY TESTED QUESTIONS |RECENTLY T…
NC CDL Combination Vehicles 2025
COMPREHENSIVE EXAM QUESTIONS
|FREQUENTLY TESTED QUESTIONS |RECENTLY
TESTING REAL EXAM QUESTIONS|VERIFIED
SOLUTIONS (100% CORRECT)
Save
Terms in this set (91)
You are coupling a semi- It will be raised slightly when the tractor is backed
trailer to your tractor but under it.
have not yet backed
under, the trailer is at the
right height when:
You should not back a At normal pressure.
tractor under a trailer until
the whole air system is:
Which part of the kingpin The shank.
should the locking jaws
close around?
When you get ready to Directly in front of the trailer.
back under the semi-trailer
you should line up:
How should you test the Pull gently forward in low gear against the locked
tractor semi-trailer trailer brakes, then look at it carefully.
connection for security?
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, 6/6/25, 1:33 PM NC CDL Combination Vehicles 2025 COMPREHENSIVE EXAM QUESTIONS |FREQUENTLY TESTED QUESTIONS |RECENTLY T…
When should you use the Never.
hand valve to park a
combination vehicle?
You supply air to the Pushing in the trailer air supply valve.
trailer tanks by:
Why should you be sure To prevent steering problems.
that the fifth wheel plate is
greased as required?
After you supply air to the Applying and releasing the trailer brakes and listening
trailer, make sure the air for brake sounds.
lines are not crossed and
the trailer brakes are
working. This is done by:
There are two things that a Go slowly around turns.
driver can do to prevent a
rollover. They are: (1) Keep
the cargo as close to the
ground as possible; and
(2):
Before you back under a Trailer brakes are locked.
trailer, make sure the:
If the service air line Nothing is likely to happen until you try to apply the
comes apart while you are brakes.
driving a combination
vehicle, but the
emergency line stays
together, what will happen
right away?
The air leakage rate for a 4
combination vehicle
(engine off, brakes on)
should not be more than
___ PSI per minute.
https://quizlet.com/1051923969/nc-cdl-combination-vehicles-2025-comprehensive-exam-questions-frequently-tested-questions-recently-testing-real-e… 2/12
NC CDL Combination Vehicles 2025
COMPREHENSIVE EXAM QUESTIONS
|FREQUENTLY TESTED QUESTIONS |RECENTLY
TESTING REAL EXAM QUESTIONS|VERIFIED
SOLUTIONS (100% CORRECT)
Save
Terms in this set (91)
You are coupling a semi- It will be raised slightly when the tractor is backed
trailer to your tractor but under it.
have not yet backed
under, the trailer is at the
right height when:
You should not back a At normal pressure.
tractor under a trailer until
the whole air system is:
Which part of the kingpin The shank.
should the locking jaws
close around?
When you get ready to Directly in front of the trailer.
back under the semi-trailer
you should line up:
How should you test the Pull gently forward in low gear against the locked
tractor semi-trailer trailer brakes, then look at it carefully.
connection for security?
https://quizlet.com/1051923969/nc-cdl-combination-vehicles-2025-comprehensive-exam-questions-frequently-tested-questions-recently-testing-real-e… 1/12
, 6/6/25, 1:33 PM NC CDL Combination Vehicles 2025 COMPREHENSIVE EXAM QUESTIONS |FREQUENTLY TESTED QUESTIONS |RECENTLY T…
When should you use the Never.
hand valve to park a
combination vehicle?
You supply air to the Pushing in the trailer air supply valve.
trailer tanks by:
Why should you be sure To prevent steering problems.
that the fifth wheel plate is
greased as required?
After you supply air to the Applying and releasing the trailer brakes and listening
trailer, make sure the air for brake sounds.
lines are not crossed and
the trailer brakes are
working. This is done by:
There are two things that a Go slowly around turns.
driver can do to prevent a
rollover. They are: (1) Keep
the cargo as close to the
ground as possible; and
(2):
Before you back under a Trailer brakes are locked.
trailer, make sure the:
If the service air line Nothing is likely to happen until you try to apply the
comes apart while you are brakes.
driving a combination
vehicle, but the
emergency line stays
together, what will happen
right away?
The air leakage rate for a 4
combination vehicle
(engine off, brakes on)
should not be more than
___ PSI per minute.
https://quizlet.com/1051923969/nc-cdl-combination-vehicles-2025-comprehensive-exam-questions-frequently-tested-questions-recently-testing-real-e… 2/12
