NEBRASKA CDL AIR BRAKES PRACTICE TEST
6.
With the controlled braking method, you:
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apply the brakes all the way and release brakes when the wheels the lock up.
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apply the brakes as hard as you can without locking the wheels.
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push down on the brake pedal as hard as you can so that the wheels the lock up.
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None of the above.
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7.
To check slack adjusters on S-cam brakes, you should:
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use gloves and pull hard on each slack adjuster you can reach.
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press the brake pedal and listen for any strange noises.
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check that the spring brakes come on automatically.
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All of the above.
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8.
When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:
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2 psi in 30 seconds.
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3 psi in one minute.
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2 psi in one minute.
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4 psi in one minute.
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9.
Empty trucks have the best braking. True or False?
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It depends on the cargo.
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False.
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True.
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It depends on the truck.
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10.
Spring brakes:
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will apply the brakes when a leak in the air brake system causes all the air to be lost.
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are usually held back by air pressure.
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will come fully on when air pressure drops to a certain range, typically 20 to 30 psi.
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All of the above.
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