CDL COMBINATION PRACTICE TEST WYOMING
11.
Blocking _______________ to keep it from sliding.
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is used in the front, back, and/or sides of a piece of cargo
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goes from the upper part of the cargo to the floor
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is used only in the back of a piece of cargo
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None of the above.
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12.
As part of your vehicle inspection, you are checking that air flows to all trailers. After using the trailer handbrake to provide air to the service line, you go to the rear of the rig. When you open the emergency line shut-off valve at the rear of the last trailer, you should hear:
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the service line valve close.
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a mechanical vibration.
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air escaping from the open valve.
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a thumping sound.
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13.
When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
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the trailer is empty or lightly loaded.
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the trailer is fully loaded.
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the trailer is overloaded.
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None of the above.
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14.
Antifreeze:
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doesn't help the engine in any way.
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helps the engine only when the temperature is below freezing.
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helps the engine under hot conditions as well as cold conditions.
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helps the engine only under hot conditions.
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15.
Cargo tie-downs are used to:
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prevent skidding.
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prevent freezing.
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keep cargo from shifting or falling.
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prevent right-turn accidents.
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16.
After a tire has been changed, the driver should stop a short while later to:
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check tread separation.
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check the tightness of the nuts.
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decrease tire pressure.
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deflate the tire to 10 psi.
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17.
Which of these statements about brakes is true?
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The lighter the vehicle, the more heat the brakes absorb to stop it.
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Brake fade does not result from excessive heat.
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To stop, the brake shoes and linings are pushed against the outside of the drum.
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None of the above.
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18.
To test the service brake:
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push the brake pedal firmly while going about 5 mph.
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shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
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push the brake pedal firmly while slowly moving backward.
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gently try to pull forward with the trailer parking brake on, then release the brake.
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19.
Which of these is NOT part of the basic method for shifting up?
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Release the accelerator, push in the clutch and shift to neutral at the same time.
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Push in the clutch and shift to the higher gear at the same time.
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Accelerate while pressing the clutch and turn toward the driver's side.
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Release the clutch and press the accelerator at the same time.
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20.
An item that is 15 feet long placed on a flatbed trailer should have at least:
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15 tie-downs.
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1 tie-down.
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3 tie-downs.
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2 tie-downs.
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