NEW YORK CDL AIR BRAKES PRACTICE TEST
16.
In some vehicles a modulating control valve may be used to:
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apply the parking brake.
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decrease the pressure in the brake system.
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apply the spring brakes gradually.
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apply the front brakes.
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17.
To prevent drowsiness you should:
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never drive with a passenger.
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get adequate sleep before a trip.
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schedule trips for the middle of the night.
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avoid exercise to save more energy.
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18.
In a dual-air system - with engine at operating RPM, the pressure should build from 85 to 100 psi within how many seconds?
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45
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20
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12
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60
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19.
Some air brake systems have an alcohol evaporator to:
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prevent ice from forming in the brake system.
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force the brake shoes away from one another.
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reduce the stopping power of the vehicle.
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reduce the danger of slipping.
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20.
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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at least 10 feet away from the fire.
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as far away from the fire as possible.
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