Test your basic knowledge |

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






3. 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.






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






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






6. Negatively charged particles of an atom






7. An electrode where reduction occurs






8. 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.






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






10. Any path that electrons flow through






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






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






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


14. 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






15. 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.






16. 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






17. A material in which charge moves through easily






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






19. The product of voltage times current






20. Neutral charged particles of an atom






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






22. 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






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






24. 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






25. 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






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






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






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






29. Temperature Controlled






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. 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






32. 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






33. Voltage Source - Conductor - Switch - Load






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






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






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






37. 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.






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


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






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






41. Positively charged particles of an atom






42. 125 and 250 VDC.






43. 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 -






44. V=IR.


45. The flow of electrons






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






47. An electrode where free electrons are produced






48. 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






49. 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.






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