CONNECTICUT CDL AIR BRAKES PRACTICE TEST
11.
On
a tractor-trailer equipped with a trailer brake hand
valve, the hand valve can be used to:
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hold compressed air.
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reduce the chance of the front wheels skidding.
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prevent movement of cargo.
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keep from rolling back.
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12.
A low air pressure warning signal must come on when the air pressure in the tanks falls below:
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15 psi.
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10 psi.
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100 psi.
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60 psi.
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13.
Brake fade results from:
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excessive wear.
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excessive use of the service brakes.
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excessive smoke.
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excessive speeding.
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14.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; less
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greater; less
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less; more
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greater; more
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15.
The safety valve installed in the first tank the air compressor pumps air is set to open:
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if there is too much pressure.
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at 30 psi.
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every 15 minutes.
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if there is too little pressure.
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