AIR BRAKES CDL PRACTICE TEST - MASSACHUSETTS
16.
The air compressor is connected to:
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the suspension system.
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the radiator.
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the engine.
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the transmission.
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17.
Slack adjusters:
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are available in four types: manual, automatic, robotic and analog.
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regulate the distance that the air brake has to travel to apply friction to the wheel.
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regulate the distance between the rear wheels.
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should move more than one inch where the push rods attach to them.
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18.
Supply pressure gauges tell you:
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when the air pressure in the tanks falls below 60 psi.
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how much air pressure you are applying to the brakes.
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when the pressure in the system drops below 60 psi.
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how much pressure is in the air tanks.
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19.
To apply the parking brakes:
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place the parking brake control knob in Neutral.
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push the parking brake control knob in.
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pull the parking brake control knob out.
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push the brake pedal three times.
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20.
If your vehicle is equipped with air brakes, loss of air pressure in the
emergency line causes:
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the speed of your vehicle to increase.
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the trailer emergency brakes to come on.
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the trailer spring brakes to come on.
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All of the above.
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