/* */

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. Negatively charged particles of an atom






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






3. 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.






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






5. The flow of electrons






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






7. A circuit with a break in its path






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


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






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






11. 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.






12. 125 and 250 VDC.






13. 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.






14. A material in which charge moves through easily






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






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






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






18. 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.






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






20. 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






21. 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.






22. The product of voltage times current






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






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






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






26. Neutral charged particles of an atom






27. 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.






28. 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.






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. A fundamental quantity in electricity (+ or -)






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






32. Positively charged particles of an atom






33. Used to optimize power output. Multiply by root 3.






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






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






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






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






38. 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






39. A device that changes mechanical energy into electricity






40. Any path that electrons flow through






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






42. An electrode where reduction occurs






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






44. 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






45. 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






46. 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 ****






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






48. Atoms that have acquired an electrical charge






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






50. V=IR.


//