CDL COMBINATION PRACTICE TEST (AK)

11. Hanging meat in a refrigerated truck can be:
a very stable load if properly distributed.
a very unstable load with a low center of gravity.
a very unstable load with a high center of gravity.
12. When more cargo is piled up in a truck, the truck becomes easier to turn over. Fully loaded rigs are _________ to roll over in a crash than empty rigs.
five times more likely
three times more likely
ten times more likely
13. You are driving a modern truck with a manual transmission. When going down a hill you should usually:
use the same gear you would use to go up the hill.
shift into neutral and coast.
use a lower gear than would be required to go up the hill.
14. Under-loaded front axles can:
make the steering axle weight too light to steer safely.
cause poor traction.
All of the above.
15. Cargo tie-downs are used to:
keep cargo from shifting or falling.
prevent freezing.
prevent right-turn accidents.
16. One way to prevent hydroplaning is to:
have less than 4/32 inch tread depth in every major groove on front tires.
take curves at higher speeds.
make sure you have enough tread on your tires.
17. Loose cargo:
could hurt or kill you during a quick stop.
can be a danger to others and yourself.
All of the above.
18. You are coupling a tractor to a semi-trailer and have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should hook up:
the emergency and service air lines.
the safety chain.
the electrical service cable.
19. When going down grades, you should:
downshift to a lower gear.
put the transmission in Neutral.
shift up.
20. Which of the following is NOT a step in backing up with a trailer?
Looking at your line of travel before you begin
Backing quickly when the path is straight
Checking the outside mirrors on both sides frequently
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