AIR BRAKES CDL PRACTICE TEST - ALABAMA
16.
The s-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the s-cam because:
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it is a safe-driving brake.
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"S" stands for "Shoes".
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it applies a "Shock" to the brakes.
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it is shaped like the letter "S".
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17.
When meeting an oncoming vehicle at night, if the other driver does not put their low beams on, you should:
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flash your high beams at the other driver.
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"get back at the other driver" by putting your own high beams on.
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slow down and look straight ahead in your lane.
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look slightly to the right to avoid looking directly at the lights of the oncoming vehicle.
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18.
With the air pressure built up to governor cutoff, the maximum leakage rates per minute are ___ psi for single vehicles and ___ psi for a combination of 2 vehicles.
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4; 5
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3; 2
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3; 4
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5; 6
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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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reduce the stopping power of the vehicle.
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reduce the danger of slipping.
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force the brake shoes away from one another.
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20.
Typically an air system is fully-charged at:
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125 psi
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25 psi
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250 psi
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75 psi
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