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Errata for Engine and Tractor Power 4th Edition
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Errata for Engine and Tractor Power 4th Edition

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Questions and Answers

What is the purpose of the diode bridge in the ignition system of Figure 8.12?

  • To regulate the voltage from the alternator
  • To convert AC current to DC current for the ignition system (correct)
  • To adjust the fuel-air mixture in the engine
  • To control the timing of the spark plugs
  • In P14.14, what does the equation 2.8 represent?

  • Volumetric efficiency of the pump-motor combination
  • Overall efficiency of the pump-motor combination (correct)
  • Torque efficiency of the pump-motor combination
  • Power efficiency of the pump-motor combination
  • What is the correct equation for B as mentioned on page 401?

  • $B = n_r R m_r ( n_r / n_s )$
  • $B = n_r R m_r ( n_r imes n_s )$
  • $B = n_r R m_r ( n_r - n_s )$
  • $B = n_r R m_r ( n_r + n_s )$ (correct)
  • What percentage of the pump input power would be converted into heat as mentioned on page 363?

    <p>50%</p> Signup and view all the answers

    What are farm tractors a key element in, according to Chapter 1?

    <p>Agricultural mechanization</p> Signup and view all the answers

    What is one of the primary objectives of the mechanization of farm work?

    <p>To reduce the drudgery of farm work</p> Signup and view all the answers

    How much energy can a good diesel tractor produce per liter of fuel?

    <p>3.0 kW-h</p> Signup and view all the answers

    What is the equivalent worth, in terms of fuel cost, of a human being working as a power unit?

    <p>$0.05/h</p> Signup and view all the answers

    What has been a contributing factor to the increased productivity per hour of labor in farm work?

    <p>High-capacity machines for critical operations</p> Signup and view all the answers

    What can modern farm tractors do better than the wooden plows pulled by draft animals?

    <p>Perform operations more thoroughly</p> Signup and view all the answers

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