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True or false:The rolling resistance encountered by a vehicle varies only with the type of road surface it moves on.

False

Soft earth offers a higher resistance than hard-surfaced roads such as ______.

concrete pavement

What is the definition of rolling resistance?

  • The amount of weight a vehicle can carry
  • The amount of fuel consumed by a vehicle
  • The amount of tractive pull required to move each gross ton over a level surface (correct)
  • The amount of time it takes for a vehicle to complete a task

    • What factors affect rolling resistance for vehicles with rubber tires?

    <p>The pressure of the tire and the tread design</p> Signup and view all the answers

    What are the three factors that affect rolling resistance for vehicles with rubber tires?

    <p>The three factors that affect rolling resistance for vehicles with rubber tires are the size of tire, the pressure of tire, and the tread design of tires.</p> Signup and view all the answers

    What type of road surface offers a higher resistance for vehicles moving on it?

    <p>Soft earth</p> Signup and view all the answers

    How does rolling resistance vary for rubber tire vehicles?

    <p>All of the above</p> Signup and view all the answers

    True or false: The rolling resistance for crawler equipment varies with the type of road surface and the condition of the road surface.

    <p>True</p> Signup and view all the answers

    How does the rolling resistance vary for crawler equipment?

    <p>The rolling resistance for crawler equipment varies with the type and condition of the road surface.</p> Signup and view all the answers

    Rolling resistance is expressed in kilograms of tractive pull required to move each gross ton over a level surface of the specified ______ or condition.

    <p>type</p> Signup and view all the answers

    For crawler equipment the rolling resistance varies with the type of ______ surface.

    <p>road</p> Signup and view all the answers

    How is rolling resistance expressed?

    <p>In kilograms of tractive pull required to move each gross ton over a level surface of the specified type or condition</p> Signup and view all the answers

    True or false: Rolling resistance for vehicles with rubber tires varies with the size of the tire, the pressure of the tire, and the color of the tire.

    <p>False</p> Signup and view all the answers

    How is rolling resistance expressed and calculated?

    <p>Rolling resistance is expressed in kilograms of tractive pull required to move each gross ton over a level surface of the specified type or condition. The rolling resistance is calculated by multiplying the rolling resistance per ton by the gross weight of the vehicle.</p> Signup and view all the answers

    What is the effect of grade changes on tractive effort?

    <p>It increases tractive effort on uphill slopes</p> Signup and view all the answers

    What is the importance of understanding the effects of equipment and methods on cost of handling earth?

    <p>All of the above</p> Signup and view all the answers

    What is the formula provided in the text for determining tractive effort on a slope?

    <p>Tractive effort = rolling resistance + grade change</p> Signup and view all the answers

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