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






2. 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.






3. 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






4. 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






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






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






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






8. Atoms that have acquired an electrical charge






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






10. 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






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






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






13. 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






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






15. 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






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






17. 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






18. 125 and 250 VDC.






19. Voltage Source - Conductor - Switch - Load






20. A material in which charge moves through easily






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






22. One or more cells connected in series






23. 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.






24. 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.






25. 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.






26. 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






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






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






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

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30. V=IR.

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31. The flow of electrons






32. 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 ****






33. 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.






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






35. 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 -






36. 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.






37. Negatively charged particles of an atom






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






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






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






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






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






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






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






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






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






47. A circuit with a break in its path






48. 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






49. Temperature Controlled






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