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Electrical Engineering

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The instantaneous movement from negatively charged atoms to positively charged atoms






2. V=IR.

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3. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.






4. The path of an electron in an atom or molecule






5. (analogous to flow) predominantly flows on the surface of the conductor.






6. Unit's main generator - offsite power via the switchyard - and redundant emergency diesel generators






7. The flow of electrons (-) through a material






8. Is the vector sum of real and reactive power in an AC circuit and is measured in volt-amperes.






9. If you are requesting service for new loads - or are making changes that affect the time when a load would operate or the amount of load -






10. Used to convert mechanical energy to electrical energy coupled to the turbine shaft






11. Are used to provide low voltage circuits for use in metering - monitoring - and protective relaying applications. The turns ratio of the transformer determines the low voltage rating as a function of the system voltage - and is often selected to be 1






12. Negatively charged particles of an atom






13. One or more cells connected in series






14. An energy storage device that converts chemical energy to electricity when power is needed.






15. Nuclear fuel is used to produce heat which is used to create steam. The steam is used to spin the turbine. The turbine shaft is connected to the generator rotor. The mechanical energy is converted to electrical energy through the generator.






16. Temperature Controlled






17. A solid conductor through which a current enters or exits a medium






18. Positively charged particles of an atom






19. A material through which a charge does not move easily






20. The product of voltage times current






21. Used at low voltage levels (600 volts and below) to feed individual loads. These devices typically contain a thermal magnetic element which provides an inverse time tripping characteristic.






22. A material in which charge moves through easily






23. May be used to power various low voltage loads and are typically used for applications that do not require any form of remote control.






24. Are used to supply power to smaller industrial and commercial users as well as residential customers. These lines can be compared to local roads such as the one in your local area or neighborhood - i.e. they're designed to handle the needs of local t






25. An electrode where free electrons are produced






26. A material that has no resistance to electrical current - this usually occurs near absolute zero






27. Used to optimize power output. Multiply by root 3.






28. Voltage Source - Conductor - Switch - Load






29. 125 and 250 VDC.






30. The power output from the plant is stepped up in voltage to match the grid voltage. Transformers that are used to provide offsite power to the plant (e.g. when the generator is off-line) step down the voltage.






31. A circuit with a complete path - which allows for charges to move






32. Offsite power comes in via sartup transformer and some sites can backfeed power from grid via the main transformer OR even a crosstie






33. Is typically used for medium voltage applications where the 3 phase conductors can be mounted within the same enclosure.






34. Requires - in part - that (1) electric power from the transmission network to the onsite distribution system shall be supplied by two physically independent circuits (not necessarily on separate rights of way) designed and located so as to minimize t






35. Operate somewhat like check valves such that current only flows in one direction - when the voltage on the input is higher than the output






36. Are used to provide low current circuits for use in metering - monitoring - and protective relaying applications. The turns ratio determines the amount of current that will be available in the secondary as a function of the system current on the prim






37. A device that changes mechanical energy into electricity






38. Is a configuration used for very high current bus assemblies typically operating at generator voltage levels of 20 to 24 kV where each conductor is mounted within its own enclosure.






39. Any path that electrons flow through






40. High voltage breakers and buses are arranged to allow power flow on the grid while isolating individual generators - transformers or transmission lines as needed. Power from the plant is delivered to the grid via the plant ****** - and the ******* se






41. Analogous to a power plant switchyard but on the load end. Voltage is stepped down to Distribution System voltages.






42. Changes the voltage of electricity so that it can be transferred over long distances






43. Similar to switchgear except for use in low voltage versus medium voltage applications. used to supply power to motor control centers and large individual low voltage motors in some applications.






44. A circuit with a break in its path






45. Atoms that have acquired an electrical charge






46. Building blocks of elements consisting of a positively charged nucleus surrounded by electrons






47. Used for transmission systems which are used for transporting bulk power from large generators to areas with heavy load concentrations such as cities.






48. Large battery - a battery charger - and a distribution panel






49. Power Systems Branch [Position] one required nuclear utilities to install degraded grid voltage relay schemes to preclude connecting safety related loads to the grid following an accident if grid voltage should be inadequate to support required opera






50. Voltage is stepped down again to serve smaller industrial and commercial customers as well as residential needs.







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