AIR BRAKES PRACTICE TEST - MINNESOTA
16.
Spring brakes are usually held back by:
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the antilock braking system.
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modulating control valves.
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air pressure.
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the brake pedal.
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17.
When using a fire extinguisher, you should stay:
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at least 10 feet away from the fire.
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at whatever distance you think is safe.
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as close to the fire as possible, without getting burnt.
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as far away from the fire as possible.
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18.
You should drain the air tanks completely. If water and oil collect in the air tanks:
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your brakes could heat up.
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your brakes could become hard to press.
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your brakes could fail.
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None of the above.
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19.
Most heavy vehicles require ________ change gears.
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triple shifting
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double clutching
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double shifting
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single clutching
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20.
Oil and water usually collect in the bottom of the air tank. If you do not have an automatic drain valve, you should drain the air tanks:
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at the end of each day of driving.
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after every three hours of service.
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after every six hours of service.
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once a week.
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