Truck Test 5

1.On a combination unit, the governor should place the compressor in the unloading stage between ___ psi minimum and ___ psi maximum.

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2.Which of the following is considered the 'brain' of an anti-lock braking system?

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3.The amount of force available at the push rod is consistent out to ____ inches of stroke.

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4.What does a kPa stand for?

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5.What is the function of a 'spitter' valve on a reservoir?

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6.A relay valve has two uses. Which of the following is one of them?

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7.On spring operated parking brakes, during normal operation, air pressure _________ the spring, holding it ready for parking or emergency braking.

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8.What will a tractor protection valve with a broken return spring cause?

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9.The _______ adjusts the free play in the linkage between the pushrod and the brake shoes.

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10.The electronic engine control is activated automatically by the ATC if all the wheels begin to slip. What effect does this have?

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11.On a combination vehicle, what is the first step in a tractor protection valve check?

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12.A brake chamber is a circular container divided in the middle by a flexible ________.

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13.Braking distance is defined as:

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14.Friction produces what?

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15.Air that is squeezed into a much smaller space than it normally would occupy is said to be ________.

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16.What is the best way to avoid major breakdowns?

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17.For a vehicle to move along the highway, an internal combustion engine must convert its _____ energy into ______ energy.

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18.A vehicle carrying a load of 20,000 kg at 20 km/h is brought to a stop in 45 metres with normal application of the brakes. If this same vehicle carried 40,000 kg at 40 km/h, it would require ____ times the braking force to stop the vehicle in 45 metres.

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19.Which of the following is NOT a component of an air brake system?

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20.What is a reason a medium sized vehicle would use air over hydraulic brakes?

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21.What absorbs the heat produced by friction?

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22.What are the two most common slack adjuster problems?

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23.The ________ the air supply is kept, the ______ chance of brake problems.

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24.Ultimately, it is the _______ responsibility to ensure that brakes are adjusted correctly.

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25.On spring brake systems, during full brake application, compounding of the force applied on the slack adjusters and linkage can be said to be a combination of two forces: the force applied by the _________ and the _________.

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26.What methods can the driver use to stay aware of the condition of the vehicle's braking system?

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27.Which of the following is NOT true about automatic traction control?

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28.Normally on an S-cam brake with automatic slack adjustment, ________ brake applications of ________ psi per day will keep the brakes properly adjusted.

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29.At a truck stop before a downgrade, what needs to be checked before continuing to drive?

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30.The ________ of the drum brakes determines the amount of _____ they are able to absorb and dissipate into the atmosphere.

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31.Which of the following is NOT a component of a spring parking brake system?

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32.Shifting should be done while taking a curve because:

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33.What part of the lane should you ride in to discourage others from trying to share the left lane?

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34.The driver must check which of the following during a vehicle inspection:

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35.Your feet should be positioned:

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36.Scanning the road ahead helps drivers to:

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37.What is the maximum number of hours a commercial vehicle driver can be on-duty after a period of seven consecutive days?

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38.If you are practising under a Class 1 or Class 3 learner

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39.What happens when you put on the brakes by pushing down the brake pedal?

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40.When you approach a bus that has flashing red lights, you are required to:

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41.When passing cars, staying in the left portion of the lane helps avoid:

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42.No matter how small the cargo is, it should have at least:

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43.How far away from a stop sign must you be to park on the curb of the road?

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44.When going down a steep hill, you should:

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45.Worn or uneven tire tread will:

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