Air Brakes Practice Test - North Carolina
6.
When a tire fails, you must:
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stay off the brake.
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hold the steering wheel firmly.
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get out and check all the tires after you have come to a stop.
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All of the above.
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7.
In newer vehicles with air brakes, you put on the parking brake:
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using a diamond-shaped, yellow, push-pull control knob.
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placing the transmission in Park.
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moving the orange push-pull lever to the right.
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using a P-shaped, yellow control knob.
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8.
Which of the following is not a way to know when to change gears?
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Use road speed (mph)
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Check that the pressure gauge shows normal oil pressure
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Watch your tachometer
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Use engine speed (rpm)
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9.
Vehicles with air brake systems take longer to come to a complete stop than vehicles with hydraulic brakes because of:
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brake fading.
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reaction distance.
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tire pressure.
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brake lag.
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10.
The emergency brake system:
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uses parts of the service and parking brake systems to stop the vehicle in the event of a brake system failure.
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uses the service brake to stop the vehicle in the event of a parking brake system failure.
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uses the parking brake to stop the vehicle in the event of a brake system failure.
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None of the above.
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