AIR BRAKES PRACTICE TEST - WYOMING
21.
The ________ brake system applies and releases the brakes when the driver uses the brake pedal during normal driving.
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anti-lock
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parking
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emergency
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service
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22.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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the parking brake should never used to slow the vehicle.
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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shifting into neutral may help slow the vehicle.
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All of the above.
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23.
Most heavy-duty vehicles use:
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dual air brake systems.
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single air brake systems.
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triple air brake systems.
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pump-the-brake systems.
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24.
Supply pressure gauges tell drivers:
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how much pressure is in the air tanks.
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how much air pressure they are applying to the brakes.
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how much pressure the relay valves should send to the trailer brakes.
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All of the above.
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25.
What factors can cause brakes to fade?
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Excessive heat and brakes out of adjustment.
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Dirt roads and in unpaved yards.
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Gravel and tar.
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Slippery surfaces and shaded areas.
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