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Electricity 4: AC/DC Motors, Controls and Maintenance

Electricity 4



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Electricity 4
AC/DC Motors, Controls and Maintenance, 10E

Tenth Edition
Jeff Keljik

ELECTRICITY 4: AC/DC MOTORS, CONTROLS, AND MAINTENANCE, 10e delivers practical coverage of AC/DC motors, controls, and maintenance.

It offers students quick and easy access to current information on DC motors, AC motors, motor control, electromechanical and solid-state relays and timers, synchronous motors, installation, sensyn units, motor maintenance, and more.

The text combines thorough explanations of how systems work with relevant, hands-on examples of electrical system operation to develop troubleshooting skills.


  • Extremely reader friendly, ELECTRICITY 4: AC/DC MOTORS, CONTROLS, AND MAINTENANCE, 10E delivers short, easy-to-read chapters that provide students with a quick reference for specific topics.
  • Control systems using programmable and electronics controls are included in coverage of the advancement of control systems.
  • Current and past technologies are thoroughly examined in conjunction with older technologies still in use, providing the necessary information to transition to newer systems.
  • Formulas and examples are explained step-by-step, and solutions are provided to reinforce processes and help in application and comprehension.
New to This Edition:
  • Providing the most current coverage available, ELECTRICITY 4: AC/DC MOTORS, CONTROLS, AND MAINTENANCE, 10E is completely updated to the 2011 National Electrical Code®.
  • It includes the most current information on energy efficient motor ratings.
  • Updated photos and drawings give students realistic visuals to help improve understanding
  • Updated information on DC motor control.
  • Chapters are reorganized to provide a better sequence of learning.
  • Solid state starters and controls reflect the latest industry practices


 1. The DC Shunt Motor

 2. The DC Series Motor

 3. DC Compound Motors

 4. Summary Review of Units 1-3

 5. Starting and Operating DC Motors.

 6. Electronic DC Motor Control

 7. DC Variable Speed Control.

 8. DC Motor Dynamic Braking.

 9. Basic Principles of Automatic Motor Control.

 10. Relays and Timers.

 11. Summary of Units 5-10.

 12. Three Phase AC Induction Motors.

 13. Starting Three Phase Induction Motors.

 14. Controllers for Three Phase Motors.

 15. Solid State Starters and Controls.

 16. Wound Rotor Induction Motor.

 17. The Synchronous Motor.

 18. Summary of Units 12-17.

 19. Single Phase AC Motors.

 20. Special Motor Application.

 21. Universal, Series and Repulsion Motors.

 22. Energy Efficiency and Motors.

 23. Three Phase Motor Installations and the NEC.

 24. Single Phase and DC Motor Installation and the NEC.

 25. Motor Maintenance.

 26. Summary of Units 19-25.



About the Author:

Jeff Keljik is a graduate of Dunwoody College of Technology and has a bachelor's degree from Metropolitan State University. He served as head of the electrical department at Dunwoody College of Technology from 1982 to 1998, and played an integral part in developing their Electrical Design and Management program.

The recipient of both the 1993 Kraemer Fellowship Award for new technology education and an award for International Technical Teacher Education, Jeff also holds a master's degree and a Journeyman's class 'A' license from the State of Minnesota.

He is an Executive Board Member for the North Central Electrical League and serves on the Education Committee for the Minnesota Electrical Association. Jeff has co-written many courses for NEC® updates, examination preparation courses, and apprenticeship materials.

372 Pages - 7-3/8 x 9-1/4 in.


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1111646759 / DE-1111646759 / 9781111646752
1435400313 / 9781435400313

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