MINNESOTA CDL COMBINATION PRACTICE TEST
11.
Where are shut-off valves?
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At the back of each trailer.
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At the front of each trailer.
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On converter dollies.
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At the front and back of each trailer.
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12.
Which of the following is true about the trailer hand valve?
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If used in driving it could cause the trailer to skid.
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The trailer hand valve works the trailer brakes.
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It should be used only to test the trailer brakes.
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All of the above.
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13.
A bridge formula permits less maximum axle weight for axles that:
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have poor weight balance
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are closer together
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are further apart than normal
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have a high center of gravity
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14.
Do NOT use the parking brakes:
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if the brakes are very hot.
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when you leave your vehicle.
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when you park for less than two hours.
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to test that they work.
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15.
Tests have shown that trucks with a high center of gravity are more likely to tip over, therefore you should:
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distribute the cargo so the majority of the weight is on the steering axle.
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distribute the cargo as low as possible.
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put the lightest parts of the cargo under the heaviest parts.
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All of the above.
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16.
What are the two basic reasons for covering cargo?
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To protect the cargo from pilferage and from weather.
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To protect people from spilled cargo and the cargo from pilferage.
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To protect the cargo from weather and to avoid littering.
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To protect people from spilled cargo and the cargo from weather.
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17.
If your trailer starts to skid, you should:
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use the trailer hand brake (if you have one) to straighten out the rig.
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release the brakes to get traction back.
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accelerate slightly.
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keep the rear of your vehicle close to the curb.
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18.
When driving in very hot weather, the heat will increase the chances of:
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suspension system defects.
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tire failure.
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loss of hydraulic pressure.
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ABS malfunction.
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19.
What factors can cause brakes to fail or fade?
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Excessive use of the service brakes
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Not relying on the engine braking effect
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Brakes out of adjustment
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All of the above.
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20.
If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
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3, 15 and 45 feet
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5, 50 and 500 feet
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10, 100 and 200 feet
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5, 25 and 50 feet
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