AIR BRAKES PRACTICE TEST - SOUTH CAROLINA
21.
To prevent rollover, you should:
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keep the cargo as close to the ground as possible.
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place the cargo near the front of the trailer.
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place the cargo near the rear of the trailer.
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put the lightest parts of the cargo under the heaviest parts.
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22.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could fail.
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your brakes could heat up.
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your brakes could become hard to press.
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None of the above.
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23.
An alcohol evaporator:
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used to reduce the chance of the front wheels skidding.
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to hold compressed air.
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protects the air brake system from too much pressure.
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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24.
Spring brakes:
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will apply the brakes when a leak in the air brake system causes all the air to be lost.
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will come fully on when air pressure drops to a certain range, typically 20 to 30 psi.
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are usually held back by air pressure.
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All of the above.
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25.
With brake drums, if brakes become too hot:
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the air compressor will kick on to cool the brakes.
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the brakes will supply too much power to the drive wheels.
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the brakes may stop working.
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your ABS will malfunction.
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