AIR BRAKES PRACTICE TEST - DELAWARE
21.
After starting the engine, oil pressure should rise to a normal level:
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within 3 miles.
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within seconds.
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within 6 minutes.
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within 2 minutes.
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22.
Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:
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20 to 45 psi.
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55 to 74 psi.
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5 to 15 psi.
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30 to 35 psi.
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23.
To prevent drowsiness you should:
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get adequate sleep before a trip.
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never drive with a passenger.
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avoid exercise to save more energy.
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schedule trips for the middle of the night.
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24.
Axle weight is:
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the weight of all the axles added together.
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the value specified by the manufacturer as the loaded weight of one axle.
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the maximum safe weight your tires can carry at a specified pressure.
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the weight transmitted to the ground by one axle or one set of axles.
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25.
If the air compressor is belt-driven, you should check the air compressor drive belt before each trip. The belt should be:
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tight.
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worn.
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cracked.
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loose.
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