Truck Test 3

1.The brake pressure gauge tells you what?

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

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

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4.Which reservoir receives air directly from a compressor?

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5.Reservoirs need to be bled…?

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

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

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

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9.What colour is the trailer air supply knob?

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10.What is the handbrake used for?

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

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

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

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

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

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16.When checking brake adjustment, the air pressure gauge must read over what?

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17.If the weight of your load doubles the weight of your vehicle, the stopping distance for the same brake pressure will be…?

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18.You're travelling at 90 km an hour and your brake system has a lag of half a second. How far will your vehicle travel in the time between you pressing the brake pedal and the brakes engaging?

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19.When the brakes are on, the angle between the slack adjuster and the pushrod should be what?

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20.In a manual transmission vehicle, the brakes should be checked with the transmission in what gear?

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21.When using anti-lock brakes, you have to get used to…?

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22.When unloaded, a vehicle can stop in 20 m from 20 km/h. If the weight of the vehicle is doubled, how far will it need to stop from 40 km/h with the same brake pressure?

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23.The emergency brake will come on automatically when the air pressure in the service brake system drops below…?

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24.When adjusting brakes, the vehicle should…?

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25.Which of these factors influence braking performance?

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26.Hydrodynamic retarders work using what?

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

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

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29.Brake fade is caused by what?

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

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

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

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

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

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35.Supplemental brakes always work on which wheels?

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

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

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39.The air pressure gauge tells you what?

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

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41.The air compressor will only work if…?

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42.Spring brakes are used for what?

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

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44.In which of the below scenarios would a driver not be permitted to extend his or her hours of driving time?

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45.If a driver elects to drive for 15 hours in one shift and defer two hours of off-duty time to the next day and, what is the maximum number of hours he or she can drive the next day?

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