Electricity 3: Power Generation and Delivery by Jeffrey J. Keljik
By Jeffrey J. Keljik
Up-to-date to the 2011 nationwide electric Code, electrical energy three: strength new release AND supply, 10E explores a number of forms of turbines and the supply of unmarried section and three-phase energy to the buyer website. Its thorough assurance of energy iteration and supply contains themes equivalent to DC turbines, polyphase circuits, three-phase wye and delta connections, electric features of three-phase alternators, replacement energy resources, transformers, and extra. a very good source for either beginner and working towards electric staff, electrical energy three emphasizes electric process operation, giving readers an exceptional knowing of electric tactics and the way to use them whereas troubleshooting.
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Increasing the resistance reduces the field current and reduces output voltage. Decreasing the resistance increases the output voltage. RESIDUAL VOLTAGE If the field circuit is opened at S1 (Figure 2–1) the field current becomes zero. A small amount of magnetic flux called residual flux remains, which is caused by residual magnetism left in the field poles. The small voltage generated when the armature cuts this flux is called residual voltage. Brush polarity remains the same when the field current is zero because the residual flux has the same direction as the original flux.
A decrease in terminal voltage. d. less change than in other generators. Copyright 2013 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. Due to electronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it.
Editorial review has deemed that any suppressed content does not materially affect the overall learning experience. Cengage Learning reserves the right to remove additional content at any time if subsequent rights restrictions require it. UNIT SUMMARY REVIEW OF UNITS 1–4 5 BJECTIVES • To provide the student with an opportunity to evaluate the information and understanding acquired in the study of the previous four units 33 Copyright 2013 Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part.