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






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


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






4. A circuit with a break in its path






5. 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.






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






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






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






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






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






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






12. The flow of electrons






13. Negatively charged particles of an atom






14. One or more cells connected in series






15. Neutral charged particles of an atom






16. 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






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






18. 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






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






20. Voltage Source - Conductor - Switch - Load






21. 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






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


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






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






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






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






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






28. 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.






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






30. 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.






31. V=IR.


32. 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.






33. 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






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






35. Atoms that have acquired an electrical charge






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






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






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






39. The product of voltage times current






40. 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 -






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






42. 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






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






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






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






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






47. 125 and 250 VDC.






48. Positively charged particles of an atom






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






50. A device that changes mechanical energy into electricity