Truck Test 10

1.The brake pressure gauge tells you what?

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2.When you press the brake pedal in an air brake vehicle, what does it do?

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3.When can the trailer handbrake be used as a parking brake?

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4.Reservoirs need to be bled…?

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5.The low air pressure indicator will always come on if the pressure drops below what level?

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6.Which reservoir receives air directly from a compressor?

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7.What colour is the trailer air supply knob?

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8.When air is forced into the brake chamber, it acts directly on what?

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9.What is the handbrake used for?

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10.You will not find spring brake actuators on…?

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11.In a braking sequence, after the driver presses down on the brake pedal, what happens?

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12.Airbrake systems are essentially made up of how many circuits?

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13.Heavy vehicles have a minimum of how many compressed air reservoirs?

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14.If your vehicle has an air purifier, you should still bleed the supply reservoir how often?

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15.Brake linings lose all effectiveness at temperatures over…?

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16.Brake linings perform best at temperatures up to…?

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17.What is the big advantage that air brake systems have over hydraulic braking systems?

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18.In drum brakes, what causes the friction which makes a vehicle slow and stop?

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19.Which of these limits your braking capability?

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20.What does the parking brake control do to the air in the vehicle's brake chamber?

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21.The brake linings can be found where?

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22.When you receive a low air pressure warning, what should you do?

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23.The truck parking brake control is what colour?

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24.The air compressor will only work if…?

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25.When connecting brake hose couplers, they should be held together at…?

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26.Spring brakes are used for what?

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27.Air brakes are now fitted on almost all vehicles weighing over…?

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28.If an air compressor begins filling the service reservoirs when their pressure drops below 105 psi, it will stop filling them when they reach what level?

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29.The air pressure gauge tells you what?

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30.To keep brake hose couplers clean when not in use, they can be hooked up to dummy couplers or…?

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31.Brakes need adjusting if the pushrod travel is more than what?

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32.Supplemental brakes always work on which wheels?

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33.Compared to hydraulic brakes, air brakes react…?

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34.When you have adjusted the brake linings so that they hug the drum snugly, you should back the adjusting bolt off by…?

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35.If your brakes have automatic slack adjusters, they have to be checked…?

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36.An air brake system can go from a pressure loss to emergency braking within…?

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37.Which of these can cause a drop in air pressure?

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38.When you double your speed, the amount of braking power required for the same stopping distance as your initial speed is…?

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39.Retarders and engine brakes will not work until…?

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40.The only certain method of checking brake adjustment is what?

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41.The emergency brakes can be activated by doing what?

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42.Which of these lessens the effect of brake lag?

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43.When checking brake adjustments, you should check…?

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44.Hydrodynamic retarders work using what?

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45.Brake fade is caused by what?

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