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






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






4. 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






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






6. 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 ****






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






8. 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.






9. 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






10. 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






11. An electrode where free electrons are produced






12. Negatively charged particles of an atom






13. A material in which charge moves through easily






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






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






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






17. 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






18. 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






19. 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






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






21. 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






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






23. 125 and 250 VDC.






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






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






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






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






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






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






30. The product of voltage times current






31. 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.






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


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


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






35. Temperature Controlled






36. 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.






37. 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.






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






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






40. 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.






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






42. A device that changes mechanical energy into electricity






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






44. V=IR.


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






46. A circuit with a break in its path






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






48. Atoms that have acquired an electrical charge






49. 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.






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






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