AIR BRAKES PRACTICE TEST - VERMONT
21.
When backing a trailer, turn the wheel right to make the cab go ________ and the trailer go ________.
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left; left
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left; right
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right; left
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22.
Foundation brakes are used:
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only with the right wheels.
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only with the front wheels.
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at each wheel.
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23.
Radial and bias-ply tires:
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should not be used together.
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should be used together.
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should be used together only when driving in packed snow.
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24.
If air pressure does not build up fast enough:
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you should turn the electrical power on and step on and off the brake pedal.
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the pressure may drop too low during driving.
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you should put the parking brake on and gently pull against it in a low gear.
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25.
Excessive use of the service brakes results in overheating and leads to:
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reduction of the brake drums.
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brake fade.
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poor traction.
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