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. An electrode where reduction occurs






2. Temperature Controlled






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






4. 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






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






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






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






10. 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.






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






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






13. 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






14. A material in which charge moves through easily






15. 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.






16. 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.






17. 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






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






19. A device that changes mechanical energy into electricity






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






21. 125 and 250 VDC.






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






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






24. Neutral charged particles of an atom






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


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






27. Any path that electrons flow through






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


29. 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






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






31. 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






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






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






34. The product of voltage times current






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






36. 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.






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






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






39. An electrode where free electrons are produced






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






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






42. 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






43. The flow of electrons






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






45. V=IR.


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






47. 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.






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






49. 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.






50. 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.