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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. 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.






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






4. V=IR.

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5. The product of voltage times current






6. 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.






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






8. One or more cells connected in series






9. 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






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






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






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






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






14. 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.






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. Used at low voltage levels (600 volts and below) to feed individual loads. These devices typically contain a thermal magnetic element which provides an inverse time tripping characteristic.






17. Negatively charged particles of an atom






18. Atoms that have acquired an electrical charge






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






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






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






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






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






25. Any path that electrons flow through






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






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. A material through which a charge does not move easily






29. 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 -






30. 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






31. An assembly of low voltage circuit breakers and/or starters used to supply individual loads of small to moderate sizes. Each feeder circuit is typically contained in a separate compartment or bucket.






32. 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






33. Temperature Controlled






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






35. 125 and 250 VDC.






36. Neutral charged particles of an atom






37. 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 ****






38. An electrode where free electrons are produced






39. A material in which charge moves through easily






40. An electrode where reduction occurs






41. 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






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






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






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






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






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






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






48. 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






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

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







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