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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. An electrode where reduction occurs






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






3. 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






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






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






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






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






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. Neutral charged particles of an atom






10. Temperature Controlled






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






12. 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.






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






14. 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.






15. 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






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






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






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






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






20. 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






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






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






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






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






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






26. 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.






27. Positively charged particles of an atom






28. Any path that electrons flow through






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 device that changes mechanical energy into electricity






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






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






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






34. 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.






35. V=IR.

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36. 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






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






38. A circuit with a break in its path






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






40. 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 ****






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






42. 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






43. The product of voltage times current






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






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






46. 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






47. 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






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






49. A material in which charge moves through easily






50. 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.