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






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


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






4. Voltage Source - Conductor - Switch - Load






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






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






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






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






9. Atoms that have acquired an electrical charge






10. 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.






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






12. One or more cells connected in series






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






14. 125 and 250 VDC.






15. An electrode where free electrons are produced






16. A circuit with a break in its path






17. Neutral charged particles of an atom






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


19. An electrode where reduction occurs






20. Negatively charged particles of an atom






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






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






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






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






25. Positively charged particles of an atom






26. 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.






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






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






29. 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.






30. A material in which charge moves through easily






31. 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






32. The product of voltage times current






33. 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






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






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






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






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






38. 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.






39. 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.






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






41. 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






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






43. Any path that electrons flow through






44. 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.






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. 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






47. 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.






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






49. V=IR.


50. 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.