AIR BRAKES CDL PRACTICE TEST - NEBRASKA
6.
Air tanks must be drained because:
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if you don't drain the tanks yourself, your battery fluid may drain out.
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compressed air usually has some water in it. The water can freeze in cold
weather and cause brake failure.
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when you push the brake pedal, air is let into each brake chamber.
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if one air system is low on pressure, the rear brakes will not be operating fully.
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7.
The tire load rating is stated:
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on the side of each tire.
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on the dashboard.
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inside the suspension system.
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on each axle.
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8.
How can you tell if your vehicle is equipped with ABS (anti-lock braking system)?
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ABS is required on all vehicles manufactured on or after 2005.
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ABS is required on all vehicles manufactured on or after 2000.
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Trucks, buses, trailers, and converter dollies built after 1998 are required to have ABS.
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There is no way to tell, ABS is still optional on all vehicle types.
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9.
The __________ keeps air from going out if the air compressor develops a leak.
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emergency relay valve
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air compressor drive belt
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one-way check valve
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tractor protection valve
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10.
You should NOT use the parking brakes if:
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the brakes are cold.
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the brakes are very hot.
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the brakes are too dry.
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All of the above.
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