NV CDL AIR BRAKES PRACTICE TEST
21.
The spring brakes come on:
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when you bring the vehicle to a complete stop right away.
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when you lose ABS control.
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when air pressure in both air brake systems rises to a value set by the manufacturer.
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when main air pressure is lost.
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22.
ABS:
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allows the wheels to lock up.
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makes it easier to break.
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makes it easier to turn.
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helps you avoid wheel lock up.
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23.
The heavier the vehicle:
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the higher the center of gravity will be.
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the more work the brakes must do to stop it.
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the less work the brakes must do to stop it.
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None of the above.
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24.
Which of the following is NOT part of the drum brake?
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Safety valve
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Axle
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Brake drum
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Return spring
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25.
In air-operated disc brakes, the pressure of the ______ on the ______ turns a "power screw".
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slack adjuster; tie rod
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brake chamber; slack adjuster
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brake camshaft; tie rod
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slack adjuster; cam roller
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