WEST VIRGINIA CDL AIR BRAKES PRACTICE TEST
6.
The safety valve installed in the first tank the air compressor pumps air is set to open:
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if there is too much pressure.
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every 15 minutes.
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if there is too little pressure.
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at 30 psi.
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7.
Which of the following statements is true?
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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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Carrying a properly charged and rated fire extinguisher will help prevent fires.
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Poor cargo ventilation is a common cause of fire.
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Under-inflated tires will NOT cause a vehicle fire.
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8.
Why must air tanks be drained?
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The water can freeze in cold weather and cause brake failure.
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There might not be enough antifreeze in the system.
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Your transmission fluid may drain out.
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The alcohol evaporator might stop working.
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9.
Which of the following is not a braking system on a truck?
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Service brake
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Steering brake
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Parking brake
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Emergency brake
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10.
You should always try to back toward the driver's side because:
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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you can more easily correct any steering errors.
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None of the above.
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