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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. Positively charged particles of an atom






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. The product of voltage times current






6. 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






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






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


9. 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 ****






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






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






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






13. 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






14. 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.






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






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






17. 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






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






19. 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






20. Voltage Source - Conductor - Switch - Load






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






22. 125 and 250 VDC.






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






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






25. 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.






26. Negatively charged particles of an atom






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






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






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






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






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






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






33. 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 -






34. One or more cells connected in series






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. The flow of electrons (-) through a material






37. 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






38. 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






39. Temperature Controlled






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






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. Any path that electrons flow through






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






44. 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.






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






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






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. Neutral charged particles of an atom






49. A material in which charge moves through easily






50. 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.