AIR BRAKES CDL PRACTICE TEST - CONNECTICUT
21.
When you release the brake pedal, the _____ rotates back and a spring pulls the brake shoes away from the drum.
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S-cam
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hydraulic brake system
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pressure gauge
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air compressor belt
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22.
The safety valve is usually set to open at:
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200 psi
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125 psi
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150 psi
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100 psi
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23.
To control your speed on a downgrade, you should:
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fully apply the brakes.
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use controlled braking.
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use engine braking.
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coast in neutral.
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24.
Before transporting sealed loads, you should check that:
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the load is properly secured.
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the seal numbers match the placard numbers.
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the load can be inspected.
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All of the above.
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25.
Controlled braking:
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involves pumping the brakes while keeping steering wheel movements very small.
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involves locking the wheels and then releasing the brakes.
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must be used when you need to turn sharply while braking.
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can be used to keep your vehicle in a straight line and allow you to turn if necessary.
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