CDL PRACTICE TEST (SD) - GENERAL KNOWLEDGE TEST
41.
In vehicles with air brakes, the air compressor governor:
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controls when the air compressor will pump air into the air storage tanks.
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controls when the air storage tanks will pump air into the air compressor.
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controls how much air the air compressor will pump into the air storage tanks.
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None of the above.
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42.
What is a "header board"?
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The pressure gauge connected to the air tank.
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The back door of the cargo compartment.
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Another term for the brake camshaft.
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A safety device that protects you from your cargo in case of an accident.
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43.
Which of the following statements about brake shoes is true?
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Brake drums must have cracks longer than half the width of the friction area.
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brakes can fade or fail from excessive heat caused by relying too much on the engine braking effect.
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Brake shoes should be thinner than ¼ inch.
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None of the above.
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44.
When driving in fog, drivers should:
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use windshield washer antifreeze.
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use low beams.
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use high beams.
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use the windshield wipers.
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45.
If you perform the skills test in a vehicle that is not equipped with air brakes:
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you will be required to operate a CMV without hydraulic brakes.
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you will be restricted from operating vehicles with air brakes.
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you will be required to operate vehicles with air brakes.
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you will be required to take the tank vehicle test.
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46.
When taking a curve you should:
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brake in the curve to avoid to locking the wheels.
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maintain the same speed you were traveling at before entering the curve.
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slightly exceed the posted speed limit for the curve, as this will help you keep control.
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be in a gear that will let you accelerate slightly in the curve.
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47.
When changing lanes, you should:
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not use your mirrors.
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do it quickly.
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not use your turn signals.
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None of the above.
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48.
_________ is operating a motor vehicle with the intent of doing harm to others.
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Road rage
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Aggressive driving
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Angry driving
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Passive driving
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49.
Distracted driving may be caused by _________ while driving.
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adjusting the radio
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reading billboards
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using your smartphone
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All of the above.
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50.
An alcohol evaporator:
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to hold compressed air.
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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used to reduce the chance of the front wheels skidding.
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protects the air brake system from too much pressure.
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