AIR BRAKES PRACTICE TEST - OREGON
21.
Before leaving your vehicle unattended, you should:
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Apply the parking brake.
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Remove the keys.
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Chock the wheels.
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All of the above.
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22.
Which of the following is a reason why air tanks must be drained?
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Your brakes may fail due to the water freezing.
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Your transmission fluid may drain out.
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Your battery fluid may drain out.
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The governor may stop the compressor from pumping air.
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23.
Supply pressure gauges tell you:
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how much pressure is in the air tanks.
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when the pressure in the system drops below 60 psi.
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how much air pressure you are applying to the brakes.
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when the air pressure in the tanks falls below 60 psi.
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24.
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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None of the above.
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25.
_________ must have a low air pressure warning signal.
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Vehicles with air brakes built after 2010
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Only vehicles with air brakes built before 2015
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Vehicles with air brakes built after 2005
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All vehicles with air brakes
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