CDL AIR BRAKES PRACTICE TEST - MISSISSIPPI
16.
The air compressor is connected to:
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the suspension system.
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the radiator.
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the engine.
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the transmission.
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17.
With the controlled braking method, you:
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apply the brakes all the way and release brakes when the wheels the lock up.
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push down on the brake pedal as hard as you can so that the wheels the lock up.
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apply the brakes as hard as you can without locking the wheels.
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None of the above.
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18.
An anti-lock braking system (ABS):
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should help you steer around an obstacle while braking.
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helps you avoid skids caused by over braking.
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helps you avoid wheel lock up.
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All of the above.
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19.
When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
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When the tank pressure falls to the "cut-in" pressure.
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When you are conducting your pre-trip inspection.
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Only while you are taking a rest break.
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Never.
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20.
Front brake limiting valves were used to:
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prevent overheating of the front tires.
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reduce your speed so further braking or shifting is not required.
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reduce exhaust emissions.
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reduce the chance of the front wheels skidding on slippery surfaces.
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