CDL PRACTICE TEST - GENERAL KNOWLEDGE (MISSISSIPPI)
41.
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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much more effective than the engine braking effect.
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the main braking factor.
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dangerous, and should be avoided at all costs.
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42.
Escape ramps:
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should not be used unless you have already tried all other possible ways to save your vehicle after brake failure.
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are designed to stop runaway vehicles safely.
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cannot be used by certain types of heavy vehicles.
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All of the above.
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43.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
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hold compressed air.
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keep from rolling back.
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reduce the chance of the front wheels skidding.
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prevent movement of cargo.
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44.
As your blood alcohol concentration (BAC) builds up, which of the following is affected?
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Coordination
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Muscle control
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Vision
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All of the above.
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45.
Skids happen whenever:
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tires lose their grip on the road.
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dual tires come in contact with each other.
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ABS is not working.
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the weight limit is exceeded.
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46.
In newer vehicles with air brakes, you put on the parking brake:
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using a diamond-shaped, yellow, push-pull control knob.
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using a P-shaped, yellow control knob.
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moving the orange push-pull lever to the right.
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placing the transmission in Park.
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47.
Which of the following statements about backing is NOT true?
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You should get out of the vehicle and check your path if you are unsure.
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Backing toward the left side is very dangerous because you can't see as well.
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You should use a helper when you can.
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You should use the lowest reverse gear.
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48.
How many reflective triangles/emergency reflectors should you carry?
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4
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3
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2
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1
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49.
Which of the following statements about driving in cold weather is true?
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An engine cannot overheat when the weather is very cold.
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Exhaust system leaks are less dangerous in cold weather.
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Brakes will never fade or fail from excessive heat caused by using
them too much.
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You should use windshield washer antifreeze.
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50.
Broken suspension parts can be very dangerous. When inspecting your vehicle for suspension system defects, look for:
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Broken leaves in a multi-leaf spring.
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Spring hangers that allow movement of axle from proper position.
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Damaged air suspension systems.
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All of the above.
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