AIR BRAKES CDL PRACTICE TEST - WEST VIRGINIA
21.
To prevent rollover, you should:
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put the lightest parts of the cargo under the heaviest parts.
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place the cargo near the front of the trailer.
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keep the cargo as close to the ground as possible.
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place the cargo near the rear of the trailer.
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22.
Brake fade results from, and is affected by:
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brakes out of adjustment.
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excessive heat caused by not relying on the engine braking effect.
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excessive heat caused by using the brakes too much.
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All of the above.
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23.
As part of the final air brake check, you should:
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Test air leakage rate.
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Check air compressor governor cut-in and cut-out pressure.
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Test low pressure warning signal.
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All of the above.
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24.
An anti-lock braking system (ABS):
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helps you avoid wheel lock up.
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should help you steer around an obstacle while braking.
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helps you avoid skids caused by over braking.
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All of the above.
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25.
By pushing the trailer air supply control knob in, you:
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supply the tires with air.
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keeps air in the tractor or truck brake system.
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supply the trailer with air.
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shut the air off and put on the trailer emergency brakes.
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