CDL COMBINATION PRACTICE TEST MARYLAND
11.
What can cause poor traction?
|
Too little weight on the driving axles.
|
|
|
Too much weight on the steering axle.
|
|
|
Overloading the truck.
|
|
|
All of the above.
|
12.
Which of the following is NOT part of a trailer air line system?
|
Kingpin
|
|
|
Emergency air-line
|
|
|
Glad hands
|
|
|
Service air-line
|
13.
On any upgrade, gravity:
|
slows you down.
|
|
|
speed you up.
|
|
|
doesn't affect your speed.
|
|
|
doubles your speed.
|
14.
To prevent rollover, you should:
|
drive on the shoulder of the road when possible.
|
|
|
turn the engine off while turning.
|
|
|
drive slowly around corners.
|
|
|
drive in the left lane.
|
15.
Which of the following is true about the trailer hand valve?
|
The trailer hand valve works the trailer brakes.
|
|
|
It should be used only to test the trailer brakes.
|
|
|
If used in driving it could cause the trailer to skid.
|
|
|
All of the above.
|
16.
If the drive wheels begin to spin when accelerating, you should:
|
brake gently.
|
|
|
continue to accelerate.
|
|
|
set the parking brake.
|
|
|
take your foot off the accelerator.
|
17.
If your trucks has a high center of gravity, which of the following is true for curves?
|
Reduce your speed to a crawl.
|
|
|
You should travel at the posted speed limit.
|
|
|
You should slow down, as your truck can roll over at the posted speed limit for the curve.
|
|
|
None of the above.
|
18.
To reduce the chance of rollover, you should:
|
distributed the cargo as low as possible inside the trailer.
|
|
|
place the cargo as high as possible inside the trailer.
|
|
|
put the lightest parts of the cargo under the heaviest parts.
|
|
|
None of the above.
|
19.
If you have convex mirrors, be aware that:
|
everything appears smaller in a convex mirror than it would if you were looking at it directly.
|
|
|
objects may appear to be faster than they really are.
|
|
|
objects seem closer than they really are.
|
|
|
in a convex mirror objects appears larger than they really are.
|
20.
If the safety relief valve in the air brake system releases air:
|
something is wrong.
|
|
|
the valve is fully operational.
|
|
|
this will supply more power to the brakes.
|
|
|
this will supply more power to the drive wheels.
|
GRADE ME
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More