AIR BRAKES PRACTICE TEST - ARIZONA
21.
The service brake applies and releases:
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the brake when you use the brake pedal during normal driving.
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the parking brake when you use the parking brake control.
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the brake in an emergency situation.
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22.
Slack adjusters:
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are used to adjust the brakes on an air-brake system.
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regulate the distance that the air brake has to travel to apply friction to the wheel.
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All of the above.
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23.
With the controlled braking method, you:
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apply the brakes all the way and release brakes when the wheels the lock up.
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push down on the brake pedal as hard as you can so that the wheels the lock up.
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apply the brakes as hard as you can without locking the wheels.
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24.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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pressure gauge
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S-cam
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air compressor belt
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25.
In vehicles with air brakes, the brake pedal:
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tells you how much pressure is in
the air tanks.
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controls the air pressure applied to the brakes.
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let the
air out of the spring brakes.
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