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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. Neutral charged particles of an atom






2. 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 -






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






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






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






6. 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.






7. A circuit with a break in its path






8. The flow of electrons






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






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






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


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






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






14. Temperature Controlled






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






16. Negatively charged particles of an atom






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






18. 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 ****






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






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






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






22. V=IR.


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






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






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






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






27. 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.






28. A device that changes mechanical energy into electricity






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






30. One or more cells connected in series






31. A material in which charge moves through easily






32. Voltage Source - Conductor - Switch - Load






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






34. 125 and 250 VDC.






35. 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.






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






37. 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






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






39. 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






40. Positively charged particles of an atom






41. 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.






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






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






44. 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






45. An electrode where free electrons are produced






46. 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.






47. 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.






48. 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.






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






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