CDL AIR BRAKES PRACTICE TEST - ALASKA
6.
The safety valve installed in the first tank the air compressor pumps air is set to open:
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if there is too little pressure.
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at 30 psi.
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if there is too much pressure.
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7.
If your trucks has a high center of gravity, which of the following is true for curves?
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You should travel at the posted speed limit.
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You should slow down, as your truck can roll over at the posted speed limit for the curve.
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Reduce your speed to a crawl.
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8.
The air compressor is connected to:
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the radiator.
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the engine.
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the transmission.
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9.
Why must air tanks be drained?
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To keep from fouling the air compressor oil.
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Water can freeze in cold weather and cause brake failure.
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Water and
oil reduce the air pressure.
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10.
If you get stuck on railroad tracks, you should:
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stay in the vehicle and call for help.
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have a helper push your vehicle.
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get out of the vehicle and away from the tracks.
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