NEW HAMPSHIRE CDL AIR BRAKES PRACTICE TEST
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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the New Hampshire CDL knowledge test. The NH CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the New Hampshire CDL Manual. Take this NH CDL practice test now to prepare for the actual air brakes test!
1.
Some air brake systems have an alcohol evaporator to:
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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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reduce the stopping power of the vehicle.
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prevent ice from forming in the brake system.
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2.
When driving in very hot weather, the heat will increase the chances of:
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suspension system defects.
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tire failure.
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ABS malfunction.
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loss of hydraulic pressure.
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3.
You hear a loud "bang" which sounds like a tire blowout. You should:
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check the tires at the next stop.
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keep driving as normal.
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inspect your tires with your mirrors.
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assume you
have a tire failure.
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4.
To make the brakes work, air brakes use:
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nitrogen.
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compressed air.
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hydraulic air.
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carbon monoxide.
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5.
The alcohol evaporator:
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shows how much air pressure you are applying to the brakes.
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helps to reduce the risk of ice in air brake valves and other parts in cold weather.
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ensures the coolant temperature gauge remains in the normal range.
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eliminates the need for daily air tank drainage.
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