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






2. A circuit with a break in its path






3. 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.






4. 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






5. Used to supply power to large industrial and commercial facilities as well as the Retail System. lines can be compared to state highways and major roads around cities.






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






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






8. 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






9. An electrode where free electrons are produced






10. Changes in voltage caused by motor starts or other loads being switched onto an electrical system






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






12. One or more cells connected in series






13. 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 -






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






15. Main Generator feeds main transformer - aux transformer (to aux loads) and crosstie to train B






16. protect your eyes and clothing. air must be circulated through the battery rooms with large stationary batteries to prevent a build-up of a combustible mixture.System cannot be grounded. First ground should do nothing.






17. Any path that electrons flow through






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






19. 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.






20. 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






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






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






23. A material in which charge moves through easily






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






25. The flow of electrons






26. A mechanical switching device used to either enable or interrupt current flow in a circuit. Typically provides both overload and fault protection. Is similar to a fuse; however - can be reset and reused.






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






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






29. 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






30. A fundamental quantity in electricity (+ or -)






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






32. A material that is usually insulated but becomes conductive through the addition of an impurity






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






34. The source voltage is equal to the sum of the voltage drops across the elements of the circuit and the load.


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. Neutral charged particles of an atom






37. The product of voltage times current






38. An electrode where reduction occurs






39. An assembly of circuit breakers typically used to supply power to large motors and medium or low voltage transformers within the auxiliary power system. Each breaker is contained in a separate cubicle along with associated current transformers - and






40. Significant impact on the capability of equipment to perform properly since the torque delivered by a motor is proportional to the voltage squared






41. Voltage Source - Conductor - Switch - Load






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






43. Positively charged particles of an atom






44. 125 and 250 VDC.






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






46. The instantaneous movement from negatively charged atoms to positively charged atoms






47. Atoms that have acquired an electrical charge






48. A condition where one or more phases have come into contact with ground or other phase(s) of the circuit - or the insulation separating them has been degraded. The current flow is only limited by the impedance between the source(s) and the ****






49. Temperature Controlled






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