NEBRASKA CDL AIR BRAKES PRACTICE TEST
16.
Weight that is loaded so there is a high center of gravity:
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causes greater chance of rollover.
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makes a vehicle easier to handle.
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reduces the chance that the load will shift to the side or fall off.
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All of the above.
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17.
If air pressure does not build up fast enough:
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you may be forced to turn off the engine and release the parking brake.
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you should put the parking brake on and gently pull against it in a low gear.
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the pressure may drop too low during driving.
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you should turn the electrical power on and step on and off the brake pedal.
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18.
Axle weight is:
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the weight transmitted to the ground by one axle or one set of axles.
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the weight of all the axles added together.
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the maximum safe weight your tires can carry at a specified pressure.
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the value specified by the manufacturer as the loaded weight of one axle.
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19.
The space under a heavily loaded vehicle can be very small. This can cause problems:
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on dirt roads.
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when crossing railroad tracks.
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on unpaved yards.
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All of the above.
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20.
The parking or emergency brakes of trucks or buses must be held on by:
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hydraulic pressure.
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fluid pressure.
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spring pressure.
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air pressure.
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