AIR BRAKES PRACTICE TEST - MAINE
6.
Which of the following statements is true?
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There is no way that short circuits due to damaged insulation can cause a vehicle fire.
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Poor cargo ventilation is a common cause of fire.
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Carrying a properly charged and rated fire extinguisher will help prevent fires.
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7.
The braking power of the spring brakes:
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is not affected by the air pressure level.
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depends on the brakes being in adjustment.
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is not affected by the condition of the service brakes.
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8.
ABS brakes help you:
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downshift before starting down a hill.
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avoid wheel lock up.
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lock up the wheels in an emergency stop.
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9.
What should you do to correct a drive-wheel braking skid?
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Turn in the same direction as the skid.
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Fully apply the brakes, turn the steering wheel quickly, push in the clutch, and countersteer.
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Stop braking, turn the steering wheel quickly, push in the clutch, and countersteer.
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10.
With a fully-charged air system, the leakage rates should be less than:
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2 psi for single vehicles and 3 psi for a combination of two vehicles.
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5 psi for single vehicles and 10 psi for a combination of two vehicles.
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3 psi for single vehicles and 4 psi for a combination of two vehicles.
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