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






2. 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






3. Total Current entering a junction must equal current leaving a junction


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






5. 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






6. Represents the power transferred to or from capacitive and inductive elements in an AC circuit and is measured in volt-amperes reactive. Voltage and current are 90






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






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






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






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






11. Atoms that have acquired an electrical charge






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






13. Neutral charged particles of an atom






14. One or more cells connected in series






15. 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 -






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






17. Any path that electrons flow through






18. An electrode where reduction occurs






19. A device that changes mechanical energy into electricity






20. A circuit with a break in its path






21. 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






22. 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 ****






23. The product of voltage times current






24. Used to isolate equipment but are typically not designed to be opened or closed while the circuit is energized (i.e. they're not designed to interrupt current). Also used in switchyard to isolate equipment






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






26. 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.






27. Voltage Source - Conductor - Switch - Load






28. 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






29. Are used at low voltages rather than medium voltage and they contain CTs and protective devices as part of the assembly.






30. V=IR.


31. Positively charged particles of an atom






32. Used in numerous applications to amplify or perform switching operations.






33. 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.






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






35. 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.






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






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






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






39. A material that dissolves in water producing a solution that conducts electricity






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






41. 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.






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






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






44. 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.






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






46. 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.






47. 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.






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






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






50. Temperature Controlled