CDL AIR BRAKES PRACTICE TEST - MONTANA
11.
Supply pressure gauges tell you:
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when the pressure in the system drops below 60 psi.
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when the air pressure in the tanks falls below 60 psi.
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how much pressure is in the air tanks.
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how much air pressure you are applying to the brakes.
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12.
Empty trucks have the best braking. True or False?
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It depends on the cargo.
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True.
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It depends on the truck.
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False.
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13.
Pressing and releasing the brake pedal unnecessarily can:
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apply more air pressure.
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let air out faster than the compressor can replace it.
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causes friction, which slows the vehicle.
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causes all the air to be lost.
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14.
What factors can cause brakes to fade?
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Slippery surfaces and shaded areas.
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Excessive heat and brakes out of adjustment.
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Gravel and tar.
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Dirt roads and in unpaved yards.
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15.
When should you downshift automatic transmissions?
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When you want to go faster.
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Watch your tachometer, and downshift when your engine reaches the top of the range.
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When you start to get drowsy.
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When going down steep grades.
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