MT CDL AIR BRAKES PRACTICE TEST
16.
When backing a trailer, you should:
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avoid correcting the drift.
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turn the steering wheel in the direction you want to go.
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try to position your vehicle so you can back in a straight line.
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never make pull-ups to reposition your vehicle.
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17.
If air doesn't flow all the way to the back:
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the trailer will tend to swing around.
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your lower fifth wheel may fall off.
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a rollover is more likely.
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your brakes will not work properly.
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18.
Which of the following statements is true?
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Under-inflated tires will NOT cause a vehicle fire.
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Poor cargo ventilation is a common cause of fire.
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Carrying a properly charged and rated fire extinguisher will help prevent fires.
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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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19.
When driving in very hot weather, the heat will increase the chances of:
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tire failure.
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ABS malfunction.
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suspension system defects.
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loss of hydraulic pressure.
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20.
Which of the following is NOT part of the drum brake?
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Axle
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Safety valve
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Return spring
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Brake drum
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