MICHIGAN CDL AIR BRAKES PRACTICE TEST
21.
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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fill it up with oil to prevent alcohol from freezing.
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check the alcohol container and fill up as necessary.
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22.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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greater; less
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greater; more
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less; more
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23.
To test the low pressure warning signal, you should:
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shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal until the low air pressure warning signal comes on.
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pump the brakes while your vehicle is running.
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check the air hoses connected to the brake chambers to make sure they aren't cut.
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24.
Foundation brakes are used:
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only with the front wheels.
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at each wheel.
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only with the right wheels.
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25.
The one-way check valve:
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keeps air from going out if the air compressor develops a leak.
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supplies air to the trailer air tanks.
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keeps your wheels from locking up when you brake hard.
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