CDL GENERAL KNOWLEDGE TEST (DE) - PRACTICE TEST
41.
To release the parking brakes:
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place the parking brake control knob in Neutral.
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pump the brake pedal 3 times.
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pull the parking brake control knob out.
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push the parking brake control knob in.
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42.
The use of brakes on a steep downgrade is:
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a supplement to the braking effect of the engine.
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the main braking factor.
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dangerous, and should be avoided at all costs.
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much more effective than the engine braking effect.
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43.
While driving, you should use your mirrors to:
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check where the rear of your vehicle is while you make turns.
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check the condition of the tires and cargo.
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know where other vehicles are around you.
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All of the above.
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44.
When a tire fails, you must:
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get out and check all the tires after you have come to a stop.
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stay off the brake.
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hold the steering wheel firmly.
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All of the above.
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45.
In which of the following situations should you check your mirrors more often?
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When driving on a narrow road.
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When driving on a single lane road.
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While stopped at an intersection.
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When changing lanes or merging.
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46.
In a dual air brake system, if one air system is very low on pressure:
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the effect won't be noticeable for the first 50 miles.
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either the front or rear brakes will not be operating fully.
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you should pump the brakes to restore pressure.
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you should drive and brake as you always have.
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47.
Sleep debt is defined as:
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the cumulative effect of not getting enough sleep.
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the amount of sleep you get each night.
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the accumulated amount of sleep from frequent rest brakes.
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All of the above.
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48.
When changing lanes, you should:
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turn sharply.
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ensure that the vehicle behind you has moved into your blind spot.
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do it quickly so other vehicles won't get into the lane.
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do it slowly, so a driver you did not see may have a chance to honk their horn.
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49.
The height of a vehicle's center of gravity is important for safe handling. Why?
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Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
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A high center of gravity means you are less likely to tip over.
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Trucks with a high center of gravity have better traction.
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All of the above.
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50.
Under a pressurized system, the radiator cap:
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should never be hot.
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should be removed when the coolant is hot.
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should always be cool.
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should never be removed until the system has cooled.
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