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. The path of an electron in an atom or molecule






2. Neutral charged particles of an atom






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






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


5. A material in which charge moves through easily






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






7. Atoms that have acquired an electrical charge






8. 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






9. Negatively charged particles of an atom






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






11. A circuit with a break in its path






12. An electrode where free electrons are produced






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






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






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






16. 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






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






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






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






20. An electrode where reduction occurs






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






22. 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.






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






24. 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






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






26. V=IR.


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






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






29. 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.






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






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






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






33. 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.






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






35. The flow of electrons






36. 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






37. 125 and 250 VDC.






38. A device that changes mechanical energy into electricity






39. 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 ****






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






41. 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






42. 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.






43. One or more cells connected in series






44. Any path that electrons flow through






45. 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.






46. Temperature Controlled






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






48. 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






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






50. 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