Lineman's and Cableman's Handbook, Eleventh Edition

Chapter 50: Self-Testing Questions and Exercises

The chapter number and page number for the answer to the question or a description of the exercise requested is indicated for each item.

  1. Describe the electron theory. 1.1

  2. Define an electric current. 1.1, 1.4

  3. Define a conductor. 1.2

  4. Define an insulator. 1.2

  5. What are three samples of good insulators? 1.2

  6. What is the unit of electric current? 1.5

  7. What instrument is used to measure electric current? 1.5

  8. What is the unit of electric pressure? 1.6

  9. Draw a schematic diagram to illustrate the proper methods of connecting instruments to a single-phase motor to measure electric current and the electric pressure supplied to the motor. 1.7

  10. What is the unit of electric power? 1.8

  11. Draw a schematic diagram illustrating the method of connecting a wattmeter in a single-phase circuit to measure the power consumed. 1.9

  12. What is the unit of electric energy? 1.9

  13. What instrument is used to measure electric energy? 1.9

  14. What is the formula for Ohm's law? 1.14

  15. Define an alternating current. 1.16

  16. What is the unit of an alternating-current frequency? 1.16

  17. Define the power factor of an alternating-current circuit. 1.22

  18. Describe the theory of operation of an electric transformer. 1.29

  19. Describe a typical electric system, itemizing the major parts of the system. 2.1

  20. What is a transmission line? 2.13

  21. How do the voltage levels of transmission, subtransmission, and distribution lines compare? 2.2 and 2.14

  22. When are direct-current transmission lines used? 2.15

  23. List the functions that can be accomplished in an electric substation. 2.16

  24. List the component parts of...

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