MS CDL COMBINATION TEST - PRACTICE TEST
11.
Tests have shown that trucks with a high center of gravity:
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can roll over if the driver slows down before entering a curve.
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can roll over if the driver exceeds the posted speed limit for a curve.
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can roll over at the posted speed limit for a curve.
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are less likely to roll over when entering a curve.
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12.
If you feel drowsy while driving, what should you do?
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Turn on the radio to keep you awake.
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Get an energy drink.
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Pull off the road and get some sleep.
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Eat heavy foods.
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13.
By pushing the trailer air supply control knob in, you:
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keeps air in the tractor or truck brake system.
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shut the air off and put on the trailer emergency brakes.
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supply the tires with air.
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supply the trailer with air.
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14.
When using a fire extinguisher, you should stay:
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at whatever distance you think is safe.
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as close to the fire as possible, without getting burnt.
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as far away from the fire as possible.
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at least 10 feet away from the fire.
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15.
If you have a manual transmission, when stopping don't _______ until the engine rpm is down close to idle.
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apply the brakes
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shift to second gear
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place the transmission in park
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push the clutch in
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16.
Most heavy trucks with manual transmissions require ____ to change gears.
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triple clutching
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double clutching
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single clutching
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None of the above.
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17.
You are coupling a tractor to a semi-trailer and have backed up but are not yet under the trailer. Before backing under the semi-trailer, you should hook up:
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the emergency and service air lines.
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the electrical service cable.
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the landing gear.
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the safety chain.
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18.
Never
drive with landing gear only part way up. Why?
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It must be exactly 5 feet off the ground.
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It makes it harder to brake.
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It may be harder to use.
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It may catch on railroad tracks.
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19.
You must have at least 4/32 inch tread depth in every major groove on front tires and at least ___ inch on other tires.
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1/32
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4/32
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3/32
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2/32
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20.
To secure the tractor you should:
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Put on the parking brake and put the transmission in neutral.
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Connect the tractor service air-line to the trailer service glad hand.
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Check that the kingpin and the fifth-wheel are aligned.
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All of the above.
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