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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. 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






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






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






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






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






6. 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






7. 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.






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






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






10. 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 -






11. Positively charged particles of an atom






12. An electrode where reduction occurs






13. An electrode where free electrons are produced






14. A circuit with a break in its path






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






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. Is measured in watts and represents the power consumed by the resistive elements in an AC circuit






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






19. 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.






20. 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.






21. 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






22. Neutral charged particles of an atom






23. V=IR.

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24. Any path that electrons flow through






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






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






27. 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.






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






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






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






31. A material in which charge moves through easily






32. The flow of electrons






33. Negatively charged particles of an atom






34. One or more cells connected in series






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






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






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






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






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






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






41. 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






42. 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






43. A device that changes mechanical energy into electricity






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






45. 125 and 250 VDC.






46. A voltage source that does not change polarity such as that delivered from a battery.






47. 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.






48. 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






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






50. The product of voltage times current