NORTH CAROLINA CDL AIR BRAKES PRACTICE TEST
11.
A broken exhaust system:
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can improve fuel efficiency.
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can let poisonous carbon monoxide to leak into the cab.
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poses no threat to the driver.
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does not cause problems.
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12.
Pressing and releasing the brake pedal unnecessarily can:
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apply more air pressure.
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causes all the air to be lost.
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let air out faster than the compressor can replace it.
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causes friction, which slows the vehicle.
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13.
To use the controlled braking method in an emergency, you should:
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apply your brakes all the way, and release the brakes when the wheels lock up.
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pump the brake pedal 3 times.
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes when the wheels lock up.
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14.
When using a fire extinguisher, you should stay:
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at least 10 feet away from the fire.
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as far away from the fire as possible.
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as close to the fire as possible, without getting burnt.
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at whatever distance you think is safe.
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15.
If the drive wheels begin to spin when accelerating, you should:
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brake gently.
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continue to accelerate.
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set the parking brake.
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take your foot off the accelerator.
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