CDL - Combination Vehicle Practice Test (Latest
Update) Questions and Verified
Answers | 100% Correct | Grade A+
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Terms in this set (39)
A tractor with a(n) ________ trailer fully loaded
requires the shortest amount of
stopping distance .
1. empty
2. fully loaded
3. lightly loaded
The air leakage rate for a 4
combination vehicle ( engine off,
brakes on) should not be more than
_____ psi per minute .
1. 4
2. 6
3. 2
If you do not do the final air brake you could lose your brakes while driving
check for air leaks and fix them
before driving,
1. you could lose your brakes while
driving
2. your fuel usage will increase
3. tire pressure will drop
, Which part of the kingpin should The shank
the locking jaws close around?
Glad hands are used to connect the service and emergency air lines from the truck or
.... tractor to the trailer
1. kingpin from the trailer to the
locking jaws of the fifth wheel
2. electrical lines from the tractor to
the trailer
3. service and emergency air lines
from the truck or tractor to the
trailer
Trucks roll over more easily when ten times more likely to roll over in a crash than
fully loaded and are empty rigs
1. ten times more likely to roll over
in a crash than empty rigs
2. five times more likely to roll over
in a crash than empty rigs
3. two times more likely to roll over
in a crash than empty rigs
In general, the higher your trucks easier it is to turn over
center of gravity, the ...
1. easier it is to turn over
2. more stable it is when turning
3. easier it is to turn around corners
Update) Questions and Verified
Answers | 100% Correct | Grade A+
Save
Terms in this set (39)
A tractor with a(n) ________ trailer fully loaded
requires the shortest amount of
stopping distance .
1. empty
2. fully loaded
3. lightly loaded
The air leakage rate for a 4
combination vehicle ( engine off,
brakes on) should not be more than
_____ psi per minute .
1. 4
2. 6
3. 2
If you do not do the final air brake you could lose your brakes while driving
check for air leaks and fix them
before driving,
1. you could lose your brakes while
driving
2. your fuel usage will increase
3. tire pressure will drop
, Which part of the kingpin should The shank
the locking jaws close around?
Glad hands are used to connect the service and emergency air lines from the truck or
.... tractor to the trailer
1. kingpin from the trailer to the
locking jaws of the fifth wheel
2. electrical lines from the tractor to
the trailer
3. service and emergency air lines
from the truck or tractor to the
trailer
Trucks roll over more easily when ten times more likely to roll over in a crash than
fully loaded and are empty rigs
1. ten times more likely to roll over
in a crash than empty rigs
2. five times more likely to roll over
in a crash than empty rigs
3. two times more likely to roll over
in a crash than empty rigs
In general, the higher your trucks easier it is to turn over
center of gravity, the ...
1. easier it is to turn over
2. more stable it is when turning
3. easier it is to turn around corners
