KY CDL AIR BRAKES PRACTICE TEST
21.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could heat up.
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your brakes could fail.
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your brakes could become hard to press.
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None of the above.
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22.
The trailer hand valve should:
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never be used to test the trailer brakes.
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never be used for parking.
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be used in driving.
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All of the above.
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23.
The safety valve is usually set to open at:
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100 psi
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200 psi
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150 psi
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125 psi
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24.
The ______ puts alcohol into the air system.
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alcohol storage tank
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alcohol evaporator
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air tank drains
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alcohol tank drains
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25.
Radial and bias-ply tires:
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should be used together only during bad weather.
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should be used together.
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should be used together only when driving in packed snow.
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should not be used together.
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