NEBRASKA CDL AIR BRAKES PRACTICE TEST
21.
Too little weight on the driving axles can cause:
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mechanical damage.
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poor traction.
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poor visibility.
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longer stopping distances.
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22.
How do you test hydraulic brakes for leaks?
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Pull forward against parking brake to make sure the hydraulic brakes holds.
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Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
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Pump the brake pedal ten times and see if it holds.
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None of the above.
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23.
ABS:
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may cause your wheels to lock when you break hard.
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helps you stop faster.
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helps you avoid skids caused by over braking.
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improves your visibility at night.
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24.
Service brakes should:
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always be checked before applying the brakes.
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be checked before each trip.
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only be checked by a mechanic.
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All of the above.
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25.
To use the controlled braking method in an emergency, you should:
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apply the brakes when the wheels lock up.
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pump the brake pedal 3 times.
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apply your brakes all the way, and release the brakes when the wheels lock up.
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apply the brakes as hard as you can without locking the wheels.
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