AIR BRAKES CDL PRACTICE TEST - NEW MEXICO
6.
Typically an air system is fully-charged at:
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125 psi
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25 psi
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75 psi
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7.
You are going down a steep grade. Once the vehicle is in the proper low gear, you should brake just hard enough to feel a slowdown, and then release the brakes when your speed has been reduced to ____ below your safe speed.
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15 mph
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5 mph
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10 mph
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8.
To test the low pressure warning signal, you should:
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shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal until the low air pressure warning signal comes on.
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check the air hoses connected to the brake chambers to make sure they aren't cut.
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pump the brakes while your vehicle is running.
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9.
When you apply the brakes, the brake shoes and linings are pushed against:
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the supply pressure gauge.
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the S-cam.
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None of the above.
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10.
Before transporting sealed loads, you should check that:
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the load is properly secured.
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the seal numbers match the placard numbers.
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the load can be inspected.
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