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

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2. The flow of electrons






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






4. An electrode where free electrons are produced






5. A material in which charge moves through easily






6. 125 and 250 VDC.






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






8. 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.






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






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






11. Negatively charged particles of an atom






12. 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.






13. 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.






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






15. 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






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






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






18. Positively charged particles of an atom






19. Any path that electrons flow through






20. An electrode where reduction occurs






21. Temperature Controlled






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






23. 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 ****






24. 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.






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






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






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






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






29. 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






30. 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






31. V=IR.

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






33. A device that changes mechanical energy into electricity






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






35. 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






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






37. 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 -






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






39. One or more cells connected in series






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






41. Atoms that have acquired an electrical charge






42. 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






43. 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.






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






45. 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.






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






47. 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






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






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






50. 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.