AIR BRAKES CDL PRACTICE TEST - OREGON
21.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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the parking brake should never used to slow the vehicle.
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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shifting into neutral may help slow the vehicle.
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All of the above.
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22.
When the wheels of a trailer lock up:
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the vehicle will gradually come to a complete stop.
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ABS will increase stopping power.
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the trailer will tend to swing around.
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All of the above.
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23.
When you apply the brakes, the brake shoes and linings are pushed against:
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the s-cam.
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slack adjusters.
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the air compressor.
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the inside of
the brake drum.
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24.
To brake in a way that will keep your vehicle in a straight line and allow you to turn if it becomes necessary, you can use:
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the "controlled braking" method or the "stab braking" method.
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the "stab braking" method.
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the "controlled braking" method.
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None of the above.
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25.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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cracked.
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loose.
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worn.
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tight.
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