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1.
Excessive use of the service brakes results in overheating. Too much heat can:
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make the brakes stop working.
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cause the brakes to grab.
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cause the brakes apply unevenly.
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cause the brakes to squeak.
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2.
Hydroplaning is more likely if:
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tire pressure is low.
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tire tread is worn.
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the road is wet.
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All of the above.
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3.
Having ABS on only the trailer:
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makes the trailer more likely to swing out.
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still gives you more control over your vehicle during braking.
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makes the trailer more likely to roll over.
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is very dangerous.
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4.
To make the brakes work, air brakes use:
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compressed air.
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hydraulic air.
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carbon monoxide.
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nitrogen.
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5.
If you're feeling tired while driving you should:
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increase your speed to get to your destination quicker.
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drink coffee.
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stop driving and get some rest.
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eat something.
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6.
Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:
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30 to 35 psi.
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5 to 15 psi.
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20 to 45 psi.
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55 to 74 psi.
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7.
If your vehicle is hydroplaning, you should:
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release the accelerator and push in the clutch.
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accelerate to get through the water as quickly as possible.
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use the brakes to slow down.
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None of the above.
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8.
You are coming down a long, steep downgrade. Which of the following is a sign that your brakes may have started to fade?
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The brake pedal feels spongy or goes to the floor.
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You hear a loud "bang".
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You have to apply your brakes harder and harder to get the same stopping power.
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The steering feels heavy.
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9.
Which of the following is NOT a reason for hydraulic brake failure?
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Brake fade on long hills
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Loss of hydraulic pressure
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Stab braking
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All of the above.
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10.
If your vehicle has an alcohol evaporator, every day during cold weather, you should:
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fill it up with oil to prevent alcohol from freezing.
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check the alcohol container and fill up as necessary.
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ensure that compressed air usually has some water and some compressor oil in it.
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fill it up with oil to prevent the pipes from freezing.
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