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






2. 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






3. One or more cells connected in series






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






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






6. 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 -






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






8. 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 ****






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






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






11. The product of voltage times current






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






13. 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.






14. A circuit with a break in its path






15. 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






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






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






18. Any path that electrons flow through






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






20. Atoms that have acquired an electrical charge






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

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22. An electrode where free electrons are produced






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






24. 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






25. Neutral charged particles of an atom






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






27. An electrode where reduction occurs






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






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






30. 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






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






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






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






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






36. Voltage Source - Conductor - Switch - Load






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






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






39. 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.






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






41. 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.






42. 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.






43. A material in which charge moves through easily






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






45. Used in numerous applications to amplify or perform switching operations.






46. 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






47. 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






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






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






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