AIR BRAKES CDL PRACTICE TEST - KANSAS
16.
You should check air pressure and temperature gauges:
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at the end of each trip.
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at the beginning of each trip.
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as often as is practical.
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every time you stop.
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17.
Before driving a vehicle with a dual air system, the air compressor should build up a minimum of _____ pressure in both the primary and secondary systems.
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50 psi
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75 psi
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100 psi
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10 psi
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18.
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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4 psi in one minute.
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3 psi in one minute.
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2 psi in 30 seconds.
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2 psi in one minute.
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19.
The safety valve is usually set to open at:
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150 psi
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125 psi
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200 psi
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100 psi
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20.
Which of the following is not a braking system on a truck?
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Emergency brake
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Steering brake
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Service brake
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Parking brake
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