AIR BRAKES CDL PRACTICE TEST - NEW HAMPSHIRE
6.
If are being followed closely, you should:
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increase your following distance.
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change lanes quickly.
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flash your brake lights.
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decrease your following distance.
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7.
Which of the following is not a way to know when to change gears?
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Check that the pressure gauge shows normal oil pressure
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Use engine speed (rpm)
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Watch your tachometer
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Use road speed (mph)
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8.
Brake fade results from, and is affected by:
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brakes out of adjustment.
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excessive heat caused by not relying on the engine braking effect.
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excessive heat caused by using the brakes too much.
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All of the above.
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9.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could heat up.
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your brakes could fail.
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your brakes could become hard to press.
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None of the above.
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10.
To perform an applied leakage test, the vehicle’s air pressure should be built up to maximum pressure. Check the air gauge to see that the air pressure should drop no more than:
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2 psi for single vehicles and 5 psi for a combination of 2 vehicles.
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5 psi for single vehicles and 6 psi for a combination of 2 vehicles.
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3 psi for single vehicles and 4 psi for a combination of 2 vehicles.
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1 psi for single vehicles and 3 psi for a combination of 2 vehicles.
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