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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. 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 ****






2. 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






3. Voltage Source - Conductor - Switch - Load






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






5. Negatively charged particles of an atom






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






7. V=IR.


8. The flow of electrons






9. 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.






10. One or more cells connected in series






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






12. Positively charged particles of an atom






13. 125 and 250 VDC.






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






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






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






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






18. Temperature Controlled






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






20. 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 -






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






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


23. Any path that electrons flow through






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


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






26. Atoms that have acquired an electrical charge






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






28. An electrode where free electrons are produced






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






30. 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.






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






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






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






34. An electrode where reduction occurs






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






36. 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.






37. 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






38. 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






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






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






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 material that dissolves in water producing a solution that conducts electricity






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






44. A device that changes mechanical energy into electricity






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






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






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






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






49. 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






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