RI CDL AIR BRAKES PRACTICE TEST
6.
If your vehicle has an alcohol evaporator, every day during cold weather, you should:
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fill it up with oil to prevent the pipes from freezing.
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check the alcohol container and fill up as necessary.
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fill it up with oil to prevent alcohol from freezing.
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7.
To test the air leakage rate, with a fully-charged air system you should ____________ and time the air pressure drop.
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put alcohol into the air system, run the engine at a fast idle
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release the parking brake, leave the engine running
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turn off the engine, release the parking brake
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8.
When backing a trailer, you should:
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try to position your vehicle so you can back in a straight line.
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turn the steering wheel in the direction you want to go.
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avoid correcting the drift.
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9.
Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
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helps keep the engine cool, as well as lubricating it.
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helps you avoid wheel lock up.
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reduces the risk of ice in air brake valves during cold weather.
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10.
An anti-lock braking system (ABS):
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helps you avoid wheel lock up.
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helps you avoid skids caused by over braking.
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All of the above.
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