KS CDL AIR BRAKES PRACTICE TEST
21.
If you are being tailgated, you should:
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avoid quick changes.
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increase your following distance.
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avoid tricks like turning on your taillights or flashing your brake lights.
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All of the above.
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22.
When you apply the brakes, the brake shoes and linings are pushed against:
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slack adjusters.
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the inside of
the brake drum.
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the s-cam.
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the air compressor.
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23.
The one-way check valve:
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keeps your wheels from locking up when you brake hard.
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keeps the axles in place.
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supplies air to the trailer air tanks.
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keeps air from going out if the air compressor develops a leak.
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24.
Air tanks must be drained completely to:
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pump water and compressor oil into the tanks.
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remove all the air.
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remove all moisture and oil.
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put alcohol into the air system.
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25.
The parking or emergency brakes of trucks or buses must be held on by:
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spring pressure.
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air pressure.
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hydraulic pressure.
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fluid pressure.
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