WYOMING CDL AIR BRAKES PRACTICE TEST
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Wyoming CDL knowledge test. The WY CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Wyoming CDL Manual. Take this WY CDL practice test now to prepare for the actual air brakes test!
1.
If the safety relief valve in the air brake system releases air:
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this will supply more power to the brakes.
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something is wrong.
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this will supply more power to the drive wheels.
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the valve is fully operational.
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2.
When coupling, you should:
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make sure the sliding fifth-wheel is locked.
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make sure the trailer wheels are not chocked.
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make sure the trailer kingpin is bent.
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be aware that wrong coupling and uncoupling can be very dangerous.
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3.
When you pull hard on a slack adjuster and it moves more than about _____ where the push rod attaches to it, the slack adjuster probably needs adjustment.
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1 inch
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1/2 inch
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1/4 inch
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2 inches
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4.
Antifreeze:
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helps the engine only under hot conditions.
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doesn't help the engine in any way.
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helps the engine only when the temperature is below freezing.
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helps the engine under hot conditions as well as cold conditions.
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5.
Too little weight on the driving axles can cause:
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longer stopping distances.
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poor traction.
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mechanical damage.
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poor visibility.
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