VT CDL AIR BRAKES PRACTICE TEST
16.
When you apply the brakes, the brake shoes and linings are pushed against:
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the S-cam.
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the supply pressure gauge.
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None of the above.
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17.
If your truck has automatic transmission, you should downshift:
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whenever road conditions allow.
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when going down grades.
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after entering a curve.
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18.
Supply pressure gauges tell you:
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how much pressure is in the air tanks.
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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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19.
Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
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pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
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shifting into neutral may help slow the vehicle.
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the parking brake should never used to slow the vehicle.
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20.
During a trip you should check:
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pressure gauges.
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temperature gauges.
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All of the above.
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