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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. Atoms that have acquired an electrical charge






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






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






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






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






6. Temperature Controlled






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






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






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






10. Positively charged particles of an atom






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






12. Neutral charged particles of an atom






13. 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






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






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






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






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






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


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






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






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






22. 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






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


24. Any path that electrons flow through






25. 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.






26. The flow of electrons






27. 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.






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






29. One or more cells connected in series






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






31. 125 and 250 VDC.






32. 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






33. 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






34. 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.






35. 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






36. Negatively charged particles of an atom






37. A device that changes mechanical energy into electricity






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






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






40. Voltage Source - Conductor - Switch - Load






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






42. 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.






43. V=IR.


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






45. 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






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. The flow of electrons (-) through a material






48. 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.






49. 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.






50. 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 -