AIR BRAKES CDL PRACTICE TEST - HAWAII
21.
An alcohol evaporator:
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used to reduce the chance of the front wheels skidding.
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is used to reduce the risk of ice in air brake valves and other parts during cold weather.
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protects the air brake system from too much pressure.
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22.
Emergency brakes and parking brakes must be held on by:
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hydraulic pressure.
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air pressure.
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mechanical force.
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23.
To use the controlled braking method in an emergency, you should:
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apply your brakes all the way, and release the brakes when the wheels lock up.
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apply the brakes as hard as you can without locking the wheels.
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apply the brakes when the wheels lock up.
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24.
What should you do to test your vehicle's low air pressure warning signal?
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Pump the brakes until the air pressure drops below 80 psi.
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With the key in the "on" or "battery charge" position, rapidly apply and release the foot brake.
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With the engine running, put the vehicle in a forward gear and attempt to drive forward.
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25.
Too little weight on the driving axles can cause:
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longer stopping distances.
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mechanical damage.
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poor traction.
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