CDL Combination Vehicles Practice Test Results

Question 1
63% answer correctly
Suppose a trailer separates from the tractor and pulls apart the air lines. The trailer brakes would apply causing which of the following to occur?
The tractor brakes would apply
The tractor would lose air pressure through the parted air lines
The tractor brakes would lock up
There would be no impact to the tractor brakes
Question 2
49% answer correctly
Rearward amplification array(the "crack-the-whip" effect) is greater in combinations where there are __________ and __________ trailers.
More, shorter
Fewer, shorter
More, longer
Fewer, longer
Question 3
84% answer correctly
You`re cranking up the front trailer supports after coupling a trailer. Which of the following is the proper final support and handle configuration?
3/4 raised with the crank handle secured
Fully raised with the crank handle removed
3/4 raised with the crank handle removed
Fully raised with the crank handle secured