AIR BRAKES CDL PRACTICE TEST - NORTH DAKOTA
16.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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hydraulic brake system
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pressure gauge
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air compressor belt
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S-cam
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17.
The use of air brakes on a steep downgrade is only a supplement to:
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the braking effect of the engine.
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the use of the "controlled braking" method.
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the use of the spring brakes.
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the use of the parking brakes.
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18.
Empty trucks require _____ stopping distances because empty vehicles have ______ traction.
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less; more
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greater; less
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greater; more
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less; less
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19.
When you apply the brakes, the brake shoes and linings are pushed against:
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slack adjusters.
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the air compressor.
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the inside of
the brake drum.
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the s-cam.
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20.
You are driving a vehicle with air brakes when the low air pressure warning light and buzzer come on. You should:
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activate your hazard lights and drive to the nearest place where you can stop.
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slow down and test your brakes.
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pull off the road and stop immediately.
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apply the brakes as hard as you can.
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