NY CDL AIR BRAKES PRACTICE TEST
16.
You are coming down a long, steep downgrade. Which of the following is a sign that your brakes may have started to fade?
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The brake pedal feels spongy or goes to the floor.
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The steering feels heavy.
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You have to apply your brakes harder and harder to get the same stopping power.
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You hear a loud "bang".
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17.
Air tanks must be drained because:
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compressed air usually has some water in it. The water can freeze in cold
weather and cause brake failure.
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when you push the brake pedal, air is let into each brake chamber.
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if you don't drain the tanks yourself, your battery fluid may drain out.
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if one air system is low on pressure, the rear brakes will not be operating fully.
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18.
If your brakes fail while you are driving on a downgrade, you should:
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immediately start looking outside your vehicle for something to stop it.
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use an escape ramp if it's available.
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take the least hazardous escape route you can.
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All of the above.
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19.
To use the controlled braking method in an emergency, you should:
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pump the brake pedal 3 times.
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apply your brakes all the way, and release the brakes when the wheels lock up.
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apply the brakes when the wheels lock up.
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apply the brakes as hard as you can without locking the wheels.
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20.
The air storage tanks:
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protects the tank and the rest of the system from too much pressure.
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are connected to the engine through gears or a v-belt.
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are used to hold compressed air.
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stop the compressor from pumping air.
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