NORTH CAROLINA CDL AIR BRAKES PRACTICE TEST
21.
The alcohol evaporator:
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helps to reduce the risk of ice in air brake valves and other parts in cold weather.
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eliminates the need for daily air tank drainage.
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ensures the coolant temperature gauge remains in the normal range.
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shows how much air pressure you are applying to the brakes.
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22.
Empty trucks:
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are higher than loaded trucks.
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have less traction.
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require greater stopping distances.
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All of the above.
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23.
ABS:
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should only be used on dry roads.
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is an addition to your normal brakes.
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replaces your normal brakes.
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allows you to brake harder.
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24.
Brake lag is:
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the distance your vehicle will travel, in ideal conditions, while you are braking.
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the amount of air pressure required to stop the vehicle.
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the distance your vehicle will continue to travel, in ideal conditions, before you hit the brakes.
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the time required for the air brakes to work after the brake pedal is pushed.
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25.
If the low air pressure warning light comes on, you should:
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call for help.
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set the parking brake.
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stop immediately.
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continue to drive normally.
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