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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?

50% Signup and view all the answers

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

Agricultural mechanization Signup and view all the answers

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

To reduce the drudgery of farm work Signup and view all the answers

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

3.0 kW-h 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?

$0.05/h Signup and view all the answers

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

High-capacity machines for critical operations Signup and view all the answers

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

Perform operations more thoroughly Signup and view all the answers