UTAH CDL AIR BRAKES PRACTICE TEST
11.
When the air system is fully-charged, the air loss rate for a single vehicle with the engine off should be less than:
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2 psi in 30 seconds.
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3 psi in one minute.
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2 psi in one minute.
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4 psi in one minute.
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12.
Empty trucks have the best braking. True or False?
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It depends on the truck.
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False.
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True.
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It depends on the cargo.
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13.
Which of the following is NOT a way to determine if your trailer is equipped with ABS (antilock braking system)?
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Wheel speed sensor wires are coming from the back of the brakes.
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It was built after March 1, 1998.
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The letters "ABS" are printed on the side of the steering wheel.
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It has yellow ABS malfunction lamps.
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14.
The total stopping distance for vehicles with air brake systems is made up of __ different factors.
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4
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5
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2
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3
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15.
Front wheel braking is good:
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Never.
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only in good weather.
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under all conditions.
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only in wet conditions.
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