FLORIDA CDL AIR BRAKES PRACTICE TEST
16.
The one-way check valve:
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keeps air from going out if the air compressor develops a leak.
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keeps the axles in place.
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supplies air to the trailer air tanks.
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keeps your wheels from locking up when you brake hard.
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17.
When you apply the brakes, the brake shoes and linings are pushed against:
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slack adjusters.
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the air compressor.
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the s-cam.
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the inside of
the brake drum.
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18.
How can you tell if your vehicle is equipped with ABS?
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Look under the vehicle for the wheel speed sensor wires coming from the back of the brakes.
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Trailers will have yellow ABS malfunction lamps on the left side.
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Look for yellow ABS malfunction lamps on the instrument panel.
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All of the above.
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19.
You should NOT use the parking brakes if:
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the brakes are too dry.
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the brakes are very hot.
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the brakes are cold.
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All of the above.
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20.
You should always try to back toward the driver's side because:
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you can more easily correct any steering errors.
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backing toward the left side is more dangerous.
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you can watch the rear of your vehicle out the side window.
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None of the above.
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